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 |
|---|---|---|---|
| Submerge | 4U | Instant | If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost. Put target creature on top of its owner's library. |
| Cosmium Catalyst | Artifact | {1}{R}, {T}: Choose an exiled card used to craft Cosmium Catalyst at random. You may cast that card without paying its mana cost. | |
| Pitfall Trap | 2W | Instant — Trap | If exactly one creature is attacking, you may pay {W} rather than pay this spell's mana cost. Destroy target attacking creature without flying. |
| Quicksilver Sea | Plane — Mirrodin | When you planeswalk to Quicksilver Sea or at the beginning of your upkeep, scry 4. (Look at the top four cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) Whenever chaos ensues, reveal the top card of your library. You may play it without paying its mana cost. | |
| Ice Cave | 3UU | Enchantment | Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell. (Mana cost includes color.) |
| Ingenious Mastery | X2U | Sorcery | You may pay {2}{U} rather than pay this spell's mana cost. If the {2}{U} cost was paid, you draw three cards, then an opponent creates two Treasure tokens and they scry 2. If that cost wasn't paid, you draw X cards. |
| Flare of Denial | 1UU | Instant | You may sacrifice a nontoken blue creature rather than pay this spell's mana cost. Counter target spell. |
| Vine Dryad | 3G | Creature — Dryad | You may exile a green card from your hand rather than pay this spell's mana cost. Flash Forestwalk (This creature can't be blocked as long as defending player controls a Forest.) 1/3 |
| Remodel | 2G | Instant | If you control two or more green permanents that share an artist, you may cast this spell without paying its mana cost. Exile target artifact. |
| Qasali Ambusher | 1GW | Creature — Cat Warrior | Reach If a creature is attacking you and you control a Forest and a Plains, you may cast Qasali Ambusher without paying its mana cost and as though it had flash. 2/3 |