Eye of Cthulhu

Flying
Whenever Eye of Cthulhu taps, you may pay {b}. If you do, create a 2/1 horror with flying onto
the battlefield with "This creature attacks each
turn if able"
{7}{b} Monstrosity 5 (If this permanent isn't monstrous, put 5 +1/+1 counters on it and it
becomes monstrous.)
When Eye of Cthulhu is monstrous, it gains
trample