M:tG card similarity search
2U · World Enchantment
Whenever a player casts an instant spell, counter it unless that player pays {X}, where X is its mana value.
| Name | Mana | Type | Text |
|---|---|---|---|
| Spellrune Howler | Creature — Werewolf | Whenever you cast an instant or sorcery spell, Spellrune Howler gets +2/+2 until end of turn. Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.) 3/4 | |
| Sarkhan, Wanderer to Shiv | 3R | Legendary Planeswalker — Sarkhan | [+1]: Dragon cards in your hand perpetually gain "This spell costs {1} less to cast," and "You may pay {X} rather than pay this spell's mana cost, where X is its mana value." [+1]: Conjure a card named Shivan Dragon into your hand. [−2]: Sarkhan, Wanderer to Shiv deals 3 damage to target creature. Loyalty 4 |
| Festival Crasher | 1R | Creature — Devil | Whenever you cast an instant or sorcery spell, Festival Crasher gets +2/+0 until end of turn. 1/3 |
| Sphere of Annihilation | XB | Artifact | Sphere of Annihilation enters the battlefield with X void counters on it. At the beginning of your upkeep, exile Sphere of Annihilation, all creatures and planeswalkers with mana value less than or equal to the number of void counters on it, and all creature and planeswalker cards in graveyards with mana value less than or equal to the number of void counters on it. |
| Glade Gnarr | 5G | Creature — Beast | Whenever a player casts a blue spell, Glade Gnarr gets +2/+2 until end of turn. 4/4 |
| Surge of Strength | RG | Instant | As an additional cost to cast this spell, discard a red or green card. Target creature gains trample and gets +X/+0 until end of turn, where X is that creature's mana value. |
| Eriette, the Beguiler | 1WUB | Legendary Creature — Human Warlock | Lifelink Whenever an Aura you control becomes attached to a nonland permanent an opponent controls with mana value less than or equal to that Aura's mana value, gain control of that permanent for as long as that Aura is attached to it. 4/4 |
| Archmage Emeritus | 2UU | Creature — Human Wizard | Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card. 2/2 |
| Silence | W | Instant | Your opponents can't cast spells this turn. |
| Agent of the Fates | 1BB | Creature — Human Assassin | Deathtouch Heroic — Whenever you cast a spell that targets Agent of the Fates, each opponent sacrifices a creature. 3/2 |