Creature - Leviathan Color tag templates(None) Sword Coast Serpent This creature can't be blocked as long as you've cast a noncreature spell this turn
Every turn lost when trying to set up a new attacker is a turn your opponent has to do whatever they want, and bringing the number of these turns as low as possible will often give you a serious leg up over other decks
Your creature cards end up being huge role players in those decks, and getting to reanimate them by exiling one of the tokens you make incidentally is frankly absurd, especially as this can make a token on an adventure as it is
This can be the difference between being knocked out in early turns and lasting long enough to hit for huge damage
Ensure the sacrifice effect every turn by sacrificing the Shaman to himself each time and you should be golden
A permanent card is an artifact, battle, creature, enchantment, land, or planeswalker card