Three-Headed Goblin

Creature — Goblin Mutant - (rare)

Triple strike (This creature deals first-strike, regular, and last-strike combat damage.)

It's true that two heads are better than one, but after that you run into diminishing returns.

Price

cardmarket 0.3

cardkingdom 0.49

cardsphere 0.37

tcgplayer 0.49

manapool 3.17