Though to be fair, it doesnt exactly reward you the more your life is lost
Elvish Champion is a classic option to grant your Elves with Forestwalk, an ability that makes your Elves unblockable if an opponent controls a Forest on the battlefield
Blink is a pretty 1D mechanic that punishes decks using the removal we all seem intent on nerfing already
At one time, there were two separate ban lists, one that tracked cards that were banned from the Commander format in general, and another listing specific creatures that were banned as a commander but ones you could still play in your 99
They misevaluate the card on defense, so let's begin there
Everything on the stack gets exiled, mana pools empty, "until end of turn" and "this turn" effects end, and damage wears off