15 more formats
Confidence:StrongSolidPlausibleTentativeSpeculative
- EnchantmentU
One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
- 3WUCreature — Human KnightUW
One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
- Enchantment — AuraU
One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
- Creature — Elf ScoutG
Copperhorn Scout untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Creature — Orc ClericW
White Plume Adventurer untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Creature — Spirit // Enchantment — AuraU
One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
- Creature — Human KnightGW
Veteran Beastrider untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Creature — Time Lord DoctorGU
The Thirteenth Doctor untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Creature — SpiritW
Drumbellower untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Creature — Orc Shaman // Legendary Creature — Human ClericRW
Plargg, Dean of Chaos untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Creature — Trill AdvisorW
One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
- InstantU
Intellectual Offering untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Enchantment — Room // Enchantment — RoomW
Dazzling Theater untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Snow Creature — God // Legendary Snow ArtifactBGU
Jorn, God of Winter untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Creature — Human KnightR
Éomer, Marshal of Rohan untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Planeswalker — GideonW
Gideon, Martial Paragon untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Creature — Human WizardGU
Prophet of Kruphix untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- EnchantmentU
Unstoppable Plan untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Creature — ElephantBGW
Ivorytusk Fortress untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Planeswalker — JaceU
Jace, Ingenious Mind-Mage untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- ArtifactR
One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
- Creature — Human Shapeshifter AssassinBU
One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
- Legendary Creature — Spirit DragonBGW
Betor, Kin to All untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
- Legendary Creature — Human WizardR
Copy engine: one card makes copies of a creature — once a turn, or once for each time you pay its cost — and each copy pays off: the creature's enter-the-battlefield effect fires again, or the hasty copy uses its tap ability. Real, repeatable value — every copy has its turn or its price, so it never goes infinite on its own.
- Legendary Creature — AngelRW
Aurelia, the Warleader untaps all (or many) permanents, refreshing Ertha Jo, Frontier Mentor's tap activation.
MTG Arena only
Synergies with cards played only on MTG Arena (including Arena rebalances). They aren't available in paper Magic.
Confidence:StrongSolidPlausibleTentativeSpeculative
- Artifact Creature — Phyrexian ShapeshifterU
One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
- EnchantmentG
Both cards trigger when a creature enters the battlefield — they fire together.
- Creature — Bat ClericB
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Human NobleGRW
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Human AssassinG
Both cards trigger when a creature enters the battlefield — they fire together.
- Creature — Frog DruidBG
Both cards trigger when a creature enters the battlefield — they fire together.
- Enchantment Creature — NightmareB
Fear of Ridicule creates token copies, feeding Ertha Jo, Frontier Mentor's ETB or copy payoff.
- Creature — InsectG
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Bird MonkRUW
Xho Cai, Flickering Talon blinks (exiles and returns) a permanent, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- Legendary Creature — Human ClericUW
Niambi, Beloved Protector returns creatures from the graveyard to the battlefield, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- Creature — Elf DruidGRW
Both cards trigger when a creature enters the battlefield — they fire together.
- Artifact Creature — Equipment PhoenixR
Forgeborn Phoenix returns creatures from the graveyard to the battlefield, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- EnchantmentUW
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Artifact — SpacecraftW
Candela, Aegis of Adagia bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
- Creature — Dragon // Sorcery — OmenGRU
Stonehide Ancient bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
- Creature — Vampire SoldierB
Legion Reconsecrator returns creatures from the graveyard to the battlefield, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- Legendary Planeswalker — TeferiUW
A-Teferi, Time Raveler bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
- Creature — HumanC
Ominous Traveler bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
- Creature — Merfolk ScoutBG
Jet Collector returns creatures from the graveyard to the battlefield, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- Creature — Human ClericW
Both cards trigger when a creature enters the battlefield — they fire together.
- Artifact Creature — ConstructB
Forgefire Automaton returns creatures from the graveyard to the battlefield, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- InstantU
Paths of Tuinvale bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
- InstantBU
Vesuvan Mist bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
- SorceryW
Honor the Past returns creatures from the graveyard to the battlefield, re-firing Ertha Jo, Frontier Mentor's enter-the-battlefield effect.
- Creature — Faerie WizardU
Talion's Throneguard bounces a permanent, enabling Ertha Jo, Frontier Mentor's recast / spell-cast trigger.
Prickly Pair2RCreature — Plant MercenaryR
Hellspur Posse Boss2RRCreature — Lizard RogueR
Prosperity Tycoon3WCreature — Human NobleW
Lassoed by the Law3WEnchantmentW
Wanted Griffin3WCreature — GriffinW
Rakish Crew2BEnchantmentB
Angelic Sell-Sword4WCreature — Angel MercenaryW
Selvala, Eager Trailblazer2GWLegendary Creature — Elf ScoutGW
We Ride at Dawn2WEnchantmentW
Hero of the Nyxborn1RWEnchantment Creature — Human SoldierRW
Nezumi LinkbreakerBCreature — Rat WarlockB
Brimstone Roundup1REnchantmentR