I Heard That!

Whenever a player casts a creature spell, that
player rolls a D20. Put an awareness counter on
I Heard That!
If the result is 5 or lower, that player is intermediately attacked by an X/1 green black
Horror creature token named Eyeless Predator
with haste, where X equals the awareness
counters on I Heard That!. Sacrifice that creature
token after the sudden combat phase ends and
remove all awareness counters on I Heard That!.