Katul, The End of All Things

{2}{u}: Sacrifice all Demons you control. Put a +1/+1 counter on Katul for every creature
you sacrificed
{4}{u}: Put a 4/4 blue demon on the field
under your control.
{5}{u}: Katul, The End of All Things gains Annihilator X, Flying, Trample. Where X
is the number Demons you control.