If your LIGHT Machine Union Monster Card is banished (except during the Damage Step): You can Special Summon 1 X-Head Cannon , Y-Dragon Head , or Z-Metal Tank from your Deck. You can return 1 Fusion Monster you control to the Extra Deck; Special Summon up to 2 of your banished monsters with different names, from among X-Head Cannon , Y-Dragon Head , and Z-Metal Tank . You can only use each effect of XYZ Combine once per turn.