M:tG card similarity search
· Legendary Land — Cave
(Transforms from Brass's Tunnel-Grinder.) {T}: Add {R}. Whenever you cast a permanent spell using mana produced by Tecutlan, the Searing Rift, discover X, where X is that spell's mana value.
| Name | Mana | Type | Text | 
|---|---|---|---|
| Troyan, Gutsy Explorer | 1GU | Legendary Creature — Vedalken Scout | {T}: Add {G}{U}. Spend this mana only to cast spells with mana value 5 or greater or spells with {X} in their mana costs. {U}, {T}: Draw a card, then discard a card. 1/3 | 
| Forced March | XBBB | Sorcery | Destroy all creatures with mana value X or less. | 
| Kiora, Sovereign of the Deep | 3GU | Legendary Creature — Merfolk Noble | Vigilance, ward {3} Whenever you cast a Kraken, Leviathan, Octopus, or Serpent spell from your hand, look at the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value less than X from among them without paying its mana cost. Put the rest on the bottom of your library in a random order. 4/5 | 
| Abaddon the Despoiler | 2UBR | Legendary Creature — Astartes Warrior | Trample Mark of Chaos Ascendant — During your turn, spells you cast from your hand with mana value X or less have cascade, where X is the total amount of life your opponents have lost this turn. 5/5 | 
| Mystic Genesis | 2GUU | Instant | Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value. | 
| Ugin's Insight | 3UU | Sorcery | Scry X, where X is the highest mana value among permanents you control, then draw three cards. | 
| Cloudhoof Kirin | 3UU | Legendary Creature — Kirin Spirit | Flying Whenever you cast a Spirit or Arcane spell, you may have target player mill X cards, where X is that spell's mana value. 4/4 | 
| Misunderstood Trapeze Elf | Stickers | {TK}{TK} — Whenever you cast a spell, this creature gets +X/+X until end of turn, where X is the amount of generic mana in that spell's mana cost. {TK}{TK}{TK} — Hexproof {TK}{TK} — 4/2 {TK}{TK}{TK}{TK} — 6/6 | |
| Entrancing Melody | XUU | Sorcery | Gain control of target creature with mana value X. | 
| Spellstutter Sprite | 1U | Creature — Faerie Wizard | Flash Flying When Spellstutter Sprite enters the battlefield, counter target spell with mana value X or less, where X is the number of Faeries you control. 1/1 |