Yang Zing Unleashed [2015 Mega-Tins Mega Pack] [MP15-EN117]

Set: 2015 Mega-Tins Mega Pack Card type: Trap Card Rarity: Common All monsters your opponent controls must attack, if able. During either player's Main Phase or Battle Phase: You can send this face-up card from your Spell & Trap Zone to the Graveyard; immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using 1 or more "Yang Zing" monsters you control as Synchro Materials.