Icon of Annihilation

Indestructible
Icon of Annihilation cannot be blocked by
creatures with power 3 or less. When Icon of Annihilation attacks, put three -1/-1 counters
on each creature defending player controls.
{r}: Icon of Annihilation gets +1/+0 until end of
turn. When its power becomes 20 this way,
target opponent sacrifices each permanent they control.