At the beginning of your end step, if you gained life this turn, create a Blood token. (It's an artifact with "1, T, Discard a card, Sacrifice this artifact: Draw a card.")
Sacrifice two Blood tokens: Transform Restless Bloodseeker. Activate only as a sorcery.
//
Bloodsoaked Reveler
At the beginning of your end step, if you gained life this turn, create a Blood token. (It's an artifact with "1, T, Discard a card, Sacrifice this artifact: Draw a card.")
4B: Each opponent loses 2 life and you gain 2 life.
