M:tG card similarity search
U · Creature — Merfolk Wizard
Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster. 1/1
| Name | Mana | Type | Text | 
|---|---|---|---|
| Ruins Recluse | 1G | Creature — Spider | Reach, deathtouch {3}{G}: Put a +1/+1 counter on Ruins Recluse. 1/1 | 
| Unholy Officiant | W | Creature — Vampire Cleric | Vigilance {4}{W}: Put a +1/+1 counter on Unholy Officiant. 1/2 | 
| Dimir Spybug | UB | Creature — Insect | Flying Menace (This creature can't be blocked except by two or more creatures.) Whenever you surveil, put a +1/+1 counter on Dimir Spybug. 1/1 | 
| Paperfin Rascal | 2U | Creature — Merfolk Rogue | When Paperfin Rascal enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Paperfin Rascal. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.) 2/2 | 
| Taurean Mauler | 2R | Creature — Shapeshifter | Changeling (This card is every creature type.) Whenever an opponent casts a spell, you may put a +1/+1 counter on Taurean Mauler. 2/2 | 
| Flourishing Fox | W | Creature — Fox | Whenever you cycle another card, put a +1/+1 counter on Flourishing Fox. Cycling {1} ({1}, Discard this card: Draw a card.) 1/1 | 
| Forgotten Ancient | 3G | Creature — Elemental | Whenever a player casts a spell, you may put a +1/+1 counter on Forgotten Ancient. At the beginning of your upkeep, you may move any number of +1/+1 counters from Forgotten Ancient onto other creatures. 0/3 | 
| Witchstalker | 1GG | Creature — Wolf | Hexproof (This creature can't be the target of spells or abilities your opponents control.) Whenever an opponent casts a blue or black spell during your turn, put a +1/+1 counter on Witchstalker. 3/3 | 
| Deeproot Champion | 1G | Creature — Merfolk Shaman | Whenever you cast a noncreature spell, put a +1/+1 counter on Deeproot Champion. 1/1 | 
| Enduring Scalelord | 4GW | Creature — Dragon | Flying Whenever one or more +1/+1 counters are put on another creature you control, you may put a +1/+1 counter on Enduring Scalelord. 4/4 |