Cheapest priced copy (Commander 2020 Oversized): $0.99 at Card Kingdom, foil, near mint, their price list as of .
Otrimi, the Ever-Playful 
Legendary Creature — Nightmare Beast · 6/6 · Mythic · Commander 2020 · #12
Mutate {1}{B}{G}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Trample
Whenever this creature deals combat damage to a player, return target creature card with mutate from your graveyard to your hand.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.99 to $8.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 12 | Mythic | $8.99 | $0.99 |
| Commander 2020 Oversized | 12 | Mythic | — | $0.99 |
One ruling from Wizards of the Coast
- 17 April 2020If Otrimi deals combat damage to a player at the same time that it’s dealt lethal damage, Otrimi (or any other creature card with mutate that was merged with it) can be the target of its triggered ability.