Malenia, Goddess of Rot

Flying, double strike, lifelink, haste
Whenever Malenia, Goddess of Rot deals
damage, put a Scarlet Rot counter on the
defending player.(Creatures that player owns get
-1/-1 counters and that player gets poison counters
equal to the number of Scarlet Rot counters on them.)
Pay half your life, rounded up: Malenia, Goddess
of Rot gains indestructible until end of turn.