M:tG card similarity search
U · Instant
Counter target activated or triggered ability. (Mana abilities can't be targeted.)
| Name | Mana | Type | Text |
|---|---|---|---|
| Nightmare Moon | 4BB | Legendary Creature — Alicorn | Flying As long as it's nighttime, Nightmare Moon gets +2/+2 and has menace. {6}: Transform Nightmare Moon. Anypony may activate this ability or help pay the cost. When they do, they become your friend. 6/6 |
| Mizzium Meddler | 2U | Creature — Vedalken Wizard | Flash (You may cast this spell any time you could cast an instant.) When Mizzium Meddler enters the battlefield, you may change a target of target spell or ability to Mizzium Meddler. 1/4 |
| Contagion Dispenser | 2GU | Artifact | When Contagion Dispenser enters the battlefield, proliferate. Whenever you proliferate during your turn, draft a card from Contagion Dispenser's spellbook. This ability triggers only once each turn. |
| Task Mage Assembly | 2R | Enchantment | 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. |
| Edifice of Authority | 3 | Artifact | {1}, {T}: Target creature can't attack this turn. Put a brick counter on Edifice of Authority. {1}, {T}: Until your next turn, target creature can't attack or block and its activated abilities can't be activated. Activate only if there are three or more brick counters on Edifice of Authority. |
| 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. |
| Encrust | 1UU | Enchantment — Aura | Enchant artifact or creature Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated. |
| Imprison | B | Enchantment — Aura | Enchant creature Whenever a player activates an ability of enchanted creature with {T} in its activation cost that isn't a mana ability, you may pay {1}. If you do, counter that ability. If you don't, destroy Imprison. Whenever enchanted creature attacks or blocks, you may pay {1}. If you do, tap the creature, remove it from combat, and creatures it was blocking that had become blocked by only that creature this combat become unblocked. If you don't, destroy Imprison. |
| Abeyance | 1W | Instant | Until end of turn, target player can't cast instant or sorcery spells, and that player can't activate abilities that aren't mana abilities. Draw a card. |
| Ertha Jo, Frontier Mentor | 2RW | Legendary Creature — Kor Advisor | When Ertha Jo, Frontier Mentor enters the battlefield, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery." Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy. 2/4 |