>>718886758
Rejuv now takes multiple punches to fully be "expended", each punch gives your team a revive token. the revive token is used when anyone on your team dies, they respawn exactly where they died with full health after 3 seconds. players cannot use multiple revive tokens, you can only use one token per rejuve. When you have revive tokens, the whole team gets various buffs, like gun and spirit damage, and are lost when all tokens are spent. The first time the midboss is killed he grants 3 revive tokens, any kills after the first grant 4 tokens.
From what I can see, valve made these changes to rejuve to reduce the super hard swings that old rejuve had. A rejuve steal before the rework was a huge loss and usually lost you the game. also old rejuve gave your team the ability to just take a teamfight and lose without much of a penalty. The new rejuve allows you to fight much longer in a teamfight, but if you lose in the teamfight you will be punished like any other teamfight loss. Also rejuve steals aren't as game ending as they were, granting your team a flat damage buff and one extra revive is strong, but not overwhelming.
OH also creep buffs are just gone, rejuve does nothing with those anymore. So no more mega creeps for auto lane clears :(