mtg dragon deck commander Dragons - The Ur-Dragon - Savage Ventmaw The Ur-Dragon (Commander) | EDHREC

Even if you put a lot of mana into this, the odds of getting more than two or three cards out of it, let alone the four youd need to get your mana back

He comes in indestructible and his ability automatically triggers at end step, so this feels sort of like an Etali where you pay one mana more to guarantee at least one trigger while also draining your opponents for a bunch of life

As for the seasonal promo card, it's Dash's sister, Violet Parr, Learning New Tricks, and again, it's a similar card in that it's foil with a different rarity icon rather than a brand-new design

This ETB can be a big deal, almost giving you a free attack if your board is wide enough