Tenpai Dragon Chundra

Trample
If you control a Dragon creature, you may cast this card from your hand by paying {1}{r} instead of its mana cost.

Whenever Tenpai Dragon Chundra attacks, you may pay {1}{r}. If you do, search your library for a creature card with “Tenpai Dragon” in its name, except Tenpai Dragon Chundra, put it onto the battlefield tapped and attacking, then shuffle your library.

At the end of combat, you may cast a Synchro creature from your hand or library. Then, conduct an additional
combat phase.