Echo of Eons

Copy target instant or sorcery spell, except that the copy is red. You may choose new targets for the copy.

This creature gets +1/+1 as long as you control a Swamp. B: Regenerate this creature.

(T: Add U.)

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.

(T: Add W.)

(T: Add U.)

(T: Add R.)

(T: Add B.)