Sizzling Changeling

(T: Add W.)

(T: Add U.)

(T: Add B.)

Other tapped creatures you control have indestructible.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.) One or two target creatures each get +2/+1 until end of turn.

Vivid — T: For each color among permanents you control, add one mana of that color.

Vivid — T: For each color among permanents you control, add one mana of that color.

This creature enters with two -1/-1 counters on it. 1R, Remove a counter from this creature: Target creature can't block this turn. Activate only as a sorcery.