In a game with shared life totals (such as a game of Commander Archenemy), effects that reference a player's life total use the team's shared life total
It does, however, give Green access to Whites powerful suite of board wipes and removal spells such as Swords to Plowshares, and Wrath of God
You can do this as many times as you want, but the first time you do it in a turn with Gisa in play, you'll get two Zombies to replace the token you sacrificed
Creature Searching/Digging One thing we need to remember is that Augment cards are very narrow, and mostly pretty useless unless we have got a Host creature on the battlefield, so we will want some ways to find or dig for creature cards
I'd estimate that this strategy leads you to the right decision approximately 90% of the time
Like all typal strategies, pirates dont mind the assistance of some changelings