Steelswarm Caucastag [HA05-EN050] Secret Rare WTR167-R If a monster is Fusion

If a monster is Fusion Summoned while you control this monster (except during the Damage Step): You can discard 1 card

the Dark Apostles devote their lives to the propagation of the unholy word

In this newlywed comedy

For a Synchro Summon

battle monsters

Steelswarm Caucastag [HA05-EN050] Secret Rare WTR167-R If a monster is FusionSet: Hidden Arsenal 5: Steelswarm Invasion Card type: Effect Monster Rarity: Secret Rare Attack: 2800 Defense: 0 When this card is Tribute Summoned by Tributing 2 "Steelswarm" monsters: Activate 1 of these effects. Destroy all monsters on the field, except this card. Destroy all Spell and Trap Cards on the field.