M:tG card similarity search
4BR · Legendary Creature — Goblin Rogue
When Grenzo enters the battlefield and at the beginning of your upkeep, heist target opponent's library. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast that you don't own. 6/4
| Name | Mana | Type | Text |
|---|---|---|---|
| Lethargy Trap | 3U | Instant — Trap | If three or more creatures are attacking, you may pay {U} rather than pay this spell's mana cost. Attacking creatures get -3/-0 until end of turn. |
| Windbrisk Heights | Land | Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.) Windbrisk Heights enters the battlefield tapped. {T}: Add {W}. {W}, {T}: You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn. | |
| Cobra Trap | 4GG | Instant — Trap | If a noncreature permanent under your control was destroyed this turn by a spell or ability an opponent controlled, you may pay {G} rather than pay this spell's mana cost. Create four 1/1 green Snake creature tokens. |
| Massacre | 2BB | Sorcery | If an opponent controls a Plains and you control a Swamp, you may cast this spell without paying its mana cost. All creatures get -2/-2 until end of turn. |
| Jace's Mindseeker | 4UU | Creature — Fish Illusion | Flying When Jace's Mindseeker enters the battlefield, target opponent mills five cards. You may cast an instant or sorcery spell from among them without paying its mana cost. 4/4 |
| Horde of Notions | WUBRG | Legendary Creature — Elemental | Vigilance, trample, haste {W}{U}{B}{R}{G}: You may play target Elemental card from your graveyard without paying its mana cost. 5/5 |
| Sunscour | 5WW | Sorcery | You may exile two white cards from your hand rather than pay this spell's mana cost. Destroy all creatures. |
| Fireblast | 4RR | Instant | You may sacrifice two Mountains rather than pay this spell's mana cost. Fireblast deals 4 damage to any target. |
| Thunderclap | 2R | Instant | You may sacrifice a Mountain rather than pay this spell's mana cost. Thunderclap deals 3 damage to target creature. |
| Memory Plunder | U/BU/BU/BU/B | Instant | You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. |