Card Codex

M:tG card similarity search

17 May 2024: Card library updated.

Heartstone

3 · Artifact

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Similar cards

Color identity:
NameManaTypeText
Knight of the Holy Nimbus WWCreature — Human Rebel Knight Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) If Knight of the Holy Nimbus would be destroyed, regenerate it. (Tap it, remove it from combat, and heal all damage on it.) {2}: Knight of the Holy Nimbus can't be regenerated this turn. Only your opponents may activate this ability. 2/2
Stone Idol Trap 5RInstant — Trap This spell costs {1} less to cast for each attacking creature. Create a 6/12 colorless Construct artifact creature token with trample. Exile it at the beginning of your next end step.
Back from the Brink 4UUEnchantment Exile a creature card from your graveyard and pay its mana cost: Create a token that's a copy of that card. Activate only as a sorcery.
Clergy of the Holy Nimbus WCreature — Human Cleric If Clergy of the Holy Nimbus would be destroyed, regenerate it. {1}: Clergy of the Holy Nimbus can't be regenerated this turn. Only your opponents may activate this ability. 1/1
Hold for Questioning 3UEnchantment — Aura Enchant creature or planeswalker When Hold for Questioning enters the battlefield, tap enchanted permanent and investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.
Conduit of Ruin 6Creature — Eldrazi When you cast this spell, you may search your library for a colorless creature card with mana value 7 or greater, reveal it, then shuffle and put that card on top. The first creature spell you cast each turn costs {2} less to cast. 5/5
Clara Oswald 6Legendary Creature — Human Advisor Impossible Girl — If Clara Oswald is your commander, choose a color before the game begins. Clara Oswald is the chosen color. If a triggered ability of a Doctor you control triggers, that ability triggers an additional time. Doctor's companion (You can have two commanders if the other is the Doctor.) 2/6
Lier, Disciple of the Drowned 3UULegendary Creature — Human Wizard Spells can't be countered. Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost. 3/4
Task Mage Assembly 2REnchantment When there are no creatures on the battlefield, sacrifice Task Mage Assembly. {2}: Task Mage Assembly deals 1 damage to target creature. Any player may activate this ability but only as a sorcery.
Bite Down on Crime 3GSorcery As an additional cost to cast this spell, you may collect evidence 6. This spell costs {2} less to cast if evidence was collected. (To collect evidence 6, exile cards with total mana value 6 or greater from your graveyard.) Target creature you control gets +2/+0 until end of turn. It deals damage equal to its power to target creature you don't control.
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