M:tG card similarity search
1G · Instant
Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents you control. Untap it.
| Name | Mana | Type | Text |
|---|---|---|---|
| High Tide | U | Instant | Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}. |
| Agatha of the Vile Cauldron | RG | Legendary Creature — Human Warlock | Activated abilities of creatures you control cost {X} less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana. {4}{R}{G}: Other creatures you control get +1/+1 and gain trample and haste until end of turn. 1/1 |
| Ephemeral Shields | 1W | Instant | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) |
| Marshal of Zhalfir | WU | Creature — Human Knight | Other Knights you control get +1/+1. {W}{U}, {T}: Tap another target creature. 2/2 |
| Roving Keep | 7 | Artifact Creature — Wall | Defender {7}: Roving Keep gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender. 5/7 |
| Xenic Poltergeist | 1BB | Creature — Spirit | {T}: Until your next upkeep, target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value. 1/1 |
| Mesmerizing Dose | 1UU | Enchantment — Aura | Enchant creature When Mesmerizing Dose enters the battlefield, tap enchanted creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) Enchanted creature doesn't untap during its controller's untap step. |
| Specter of Mortality | 3BB | Creature — Specter | Flying When Specter of Mortality enters the battlefield, you may exile one or more creature cards from your graveyard. When you do, each other creature gets -X/-X until end of turn, where X is the number of cards exiled this way. 3/3 |
| Balancing Act | 2WW | Sorcery | Each player chooses a number of permanents they control equal to the number of permanents controlled by the player who controls the fewest, then sacrifices the rest. Each player discards cards the same way. |
| Omen of Fire | 3RR | Instant | Return all Islands to their owners' hands. Each player sacrifices a Plains or a white permanent for each white permanent they control. |