Sangenpai Transcend Dragion

Synchronize — You may also cast this card from your hand or library by sacrificing a Dragon Tuner creature and one or more Dragon creatures whose total mana value equals this card’s mana value.

Your opponent’s creatures must attack if able and cannot cast spells or activate abilities during the combat phase.

If you have conducted two or more combat phases this turn, you may cast this card from your graveyard without paying its mana cost. Then, you may destroy target permanent.