World Ender

Equip {10}{b/r}{b/r}{b/r}
Equipped creature gets +4/+4
My equip cost is {x} less, where X is the number
of other Demons and Equipment you control
When equipped creature attacks, choose 1:
• Put a +1/+1 counter on all other attacking
demons.
• Target creature with "Level up" gains 2 levels.
• Transform target creature, ignoring its
conditions.