Boulder Jockey

Creature — Goblin4/4$0.25

({D} is a land drop. You may give up one potential land drop this turn to pay for {D}.) Whenever Boulder Jockey attacks, you may pay {D}. If you do, create a 3/3 colorless Construct artifact creature token named Boulder that's tapped and attacking. Sacrifice that token at the beginning of the next end step.

Not legal in Commander

View Boulder Jockey on Scryfall