Sol Ring

This land enters with three mining counters on it. T, Remove a mining counter from this land: Add one mana of any color. If there are no mining counters on this land, sacrifice it.

Return target card from your graveyard to your hand.

T: Add C. 1: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. T: Target Assembly-Worker creature gets +1/+1 until end of turn.