Myr Prototype

Artifact Creature — Myr - (uncommon)

At the beginning of your upkeep, put a +1/+1 counter on Myr Prototype.
Myr Prototype can't attack or block unless you pay  for each +1/+1 counter on it.

Price

cardkingdom 0.35

cardmarket 0.15

tcgplayer 0.44

cardsphere 0.23