Choose a foe with a mutual enemy like someone with nasty permanent that is dominating the table like Rhystic Study, Smothering Tithe or Esper Sentinel that needs to be answered to get what you need
This character cards ink cost is pretty reasonable, and the Willpower is just okay enough for it to be considered a balanced card despite its cheesing potential
You cannot attack that player with the Thirster of Blood this turn, but in a multiplayer game you can attack, and then if you slip through another untap, another extra combat and another attack
We have done this once before on The Capitoline Triad
Building decks that combo specific cards to gain an advantage are growing more scant as the game grows more aggressive, partly to deal with a lopsided meta that sees the deck with the strongest cards that ramps the fastest utterly dominating
This can be for things like Cabal Therapy flashbacks or it can just be for a little extra defense that turn