M:tG card similarity search
1W · Legendary Creature — Horse
Whenever a commander you control attacks, put a +1/+1 counter on it. Partner (You can have two commanders if both have partner.) 1/1
| Name | Mana | Type | Text | 
|---|---|---|---|
| Sample Collector | 2G | Creature — Troll Detective | Whenever Sample Collector attacks, you may collect evidence 3. When you do, put a +1/+1 counter on target creature you control. (To collect evidence 3, exile cards with total mana value 3 or greater from your graveyard.) 2/3 | 
| Courage in Crisis | 2G | Sorcery | Put a +1/+1 counter on target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | 
| Drillworks Mole | 1 | Artifact Creature — Mole | {2}, {T}: Put a +1/+1 counter on Drillworks Mole and a +1/+1 counter on up to one target commander creature you control. 1/1 | 
| Thantis, the Warweaver | 3BRG | Legendary Creature — Spider | Vigilance, reach All creatures attack each combat if able. Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Thantis, the Warweaver. 5/5 | 
| Rite of Passage | 2G | Enchantment | Whenever a creature you control is dealt damage, put a +1/+1 counter on it. (It must survive the damage to get the counter.) | 
| Gavony Township | Land | {T}: Add {C}. {2}{G}{W}, {T}: Put a +1/+1 counter on each creature you control. | |
| 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 | 
| Slip Out the Back | U | Instant | Put a +1/+1 counter on target creature. It phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.) | 
| Botanical Brawler | GW | Creature — Elemental Warrior | Trample Botanical Brawler enters the battlefield with two +1/+1 counters on it. Whenever one or more +1/+1 counters are put on another permanent you control, if it's the first time +1/+1 counters have been put on that permanent this turn, put a +1/+1 counter on Botanical Brawler. 0/0 | 
| Indulgent Aristocrat | B | Creature — Vampire Noble | Lifelink {2}, Sacrifice a creature: Put a +1/+1 counter on each Vampire you control. 1/1 |