Simply put, the deathtouch ability means that any amount of damage that card deals to another creature is enough to kill it no matter what the other creatures toughness is
Decks like Dredge that have historically dominated those match-ups in Game One, so a main deck source of graveyard hate is always welcome
7: You get an emblem with Whenever a Mountain you control enters, this emblem deals 4 damage to any target. Loyalty: 4 Illustrated by Eric Wilkerson Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Azlask and Ulalek are both colorless in gameplay, but both have all five colors in their color identity for Commander deckbuilding purposes
As an aside, I strongly advocate for people to try this more often: next time you feel like you need to buy cards because youve ran out of staples, type up the decklist of a deck you havent played for a while and then feel free to disassemble it
Also don't sleep on the free bounce of Otawara in that format as well, although some of the others aren't powerful enough for Type Four