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 | 
|---|---|---|---|
| Mercadia's Downfall | 2R | Instant | Each attacking creature gets +1/+0 until end of turn for each nonbasic land defending player controls. | 
| Hazoret's Undying Fury | 4RR | Sorcery | Shuffle your library, then exile the top four cards. You may cast any number of spells with mana value 5 or less from among them without paying their mana costs. Lands you control don't untap during your next untap step. | 
| Seedborn Muse | 3GG | Creature — Spirit | Untap all permanents you control during each other player's untap step. 2/4 | 
| Break of Day | 1W | Instant | Creatures you control get +1/+1 until end of turn. Fateful hour — If you have 5 or less life, those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.) | 
| Puca's Mischief | 3U | Enchantment | At the beginning of your upkeep, you may exchange control of target nonland permanent you control and target nonland permanent an opponent controls with an equal or lesser mana value. | 
| Jiang Yanggu | 4G | Legendary Planeswalker — Yanggu | [+1]: Target creature gets +2/+2 until end of turn. [−1]: If you don't control a creature named Mowu, create Mowu, a legendary 3/3 green Dog creature token. [−5]: Until end of turn, target creature gains trample and gets +X/+X, where X is the number of lands you control. Loyalty 4 | 
| Gyruda, Doom of Depths | 4U/BU/B | Legendary Creature — Demon Kraken | Companion — Your starting deck contains only cards with even mana values. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) When Gyruda enters the battlefield, each player mills four cards. Put a creature card with an even mana value from among the milled cards onto the battlefield under your control. 6/6 | 
| Padeem, Consul of Innovation | 3U | Legendary Creature — Vedalken Artificer | Artifacts you control have hexproof. At the beginning of your upkeep, if you control the artifact with the highest mana value or tied for the highest mana value, draw a card. 1/4 | 
| Custodi Soulcaller | 1WW | Creature — Human Cleric | Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Whenever Custodi Soulcaller attacks, return target creature card with mana value X or less from your graveyard to the battlefield, where X is the number of players you attacked this combat. 1/2 | 
| Flame Spirit | 4R | Creature — Elemental Spirit | {R}: Flame Spirit gets +1/+0 until end of turn. 2/3 |