I think one day I may return with a rundown of more underrated choices, but really, it all comes down to how you opt to play the game as well as your favorite blink deck
When you cast Eldritch Evolution, you have to sacrifice a creature which, in turn, lets you search your library for a creature with a mana cost equal to the sacrificed creature plus two mana
Depending on how your local game store handles things, you might have to specifically sign up to attend or just show up on the day, but typically participation sees you purchase a special pre-release pack which will give you a life counter dice, six booster packs from the set, and a special promo card
While it doesnt see as much play in Commander, the effect is still powerful, allowing you to generate Card Advantage for a little bit of life (or a lot, depending on your deck)
Generally, any evasive creature (like Kappa Cannoneer) can fulfill this role, but the specifics will depend on which commander youre playing
If you are going to build it up over a few turns, you might as well try to make sure it sticks around
