Iezabel of the Blood Council

Haste
{b}, {t}, Sacrifice a creature: Choose one. If the sacrificed creature was legendary, choose two
instead. You may choose the same mode more
than once. X is the sacrificed creature's power.
• Target player loses X life and you gain X life.
• Target creature gets -X/-X until end of turn.
• You draw half X cards and lose half X life.
Round up each time.