Innistrad Remastered

Restless Bloodseeker // 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 token: Draw a card.")
Sacrifice two Blood tokens: Transform this creature. Activate only as a sorcery.

At the beginning of your end step, if you gained life this turn, create a Blood token.
Sacrifice two Blood tokens: Transform this creature. Activate only as a sorcery.

Innistrad: Double Feature

Innistrad: Crimson Vow

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.

At the beginning of your end step, if you gained life this turn, create a Blood token.
Sacrifice two Blood tokens: Transform Restless Bloodseeker. Activate only as a sorcery.