M:tG card similarity search
1UU · Enchantment — Case
At the beginning of your upkeep, surveil 1. To solve — There are fifteen or more cards in your graveyard. (If unsolved, solve at the beginning of your end step.) Solved — Whenever you cast a nonlegendary creature spell, copy that spell. (The copy becomes a token.)
| Name | Mana | Type | Text | 
|---|---|---|---|
| Restless Dreams | B | Sorcery | As an additional cost to cast this spell, discard X cards. Return X target creature cards from your graveyard to your hand. | 
| Rakshasa's Disdain | 2U | Instant | Counter target spell unless its controller pays {1} for each card in your graveyard. | 
| Opal Gargoyle | 1W | Enchantment | When an opponent casts a creature spell, if Opal Gargoyle is an enchantment, Opal Gargoyle becomes a 2/2 Gargoyle creature with flying. | 
| Kyoki, Sanity's Eclipse | 4BB | Legendary Creature — Demon Spirit | Whenever you cast a Spirit or Arcane spell, target opponent exiles a card from their hand. 6/4 | 
| The Howling Abomination | 3RG | Legendary Creature — Human Beast Warrior | Haste The Howling Abomination has trample as long as you've cast three or more spells this turn. Whenever The Howling Abomination becomes the target of a spell, it gets +2/+2 until end of turn and deals 2 damage to each opponent. 5/5 | 
| Deekah, Fractal Theorist | 4U | Legendary Creature — Human Wizard | Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is that spell's mana value. {3}{U}: Target creature token can't be blocked this turn. 3/3 | 
| Docent of Perfection | 3UU | Creature — Insect Horror | Flying Whenever you cast an instant or sorcery spell, create a 1/1 blue Human Wizard creature token. Then if you control three or more Wizards, transform Docent of Perfection. 5/4 | 
| Circular Logic | 2U | Instant | Counter target spell unless its controller pays {1} for each card in your graveyard. Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) | 
| Negate | 1U | Instant | Counter target noncreature spell. | 
| Psionic Pulse | 2U | Instant — Adventure | Counter target noncreature spell. (Then exile this card. You may cast the creature later from exile.) |