Rakdos and Izoni

When Rakdos and Izoni enters the battlefield,
create X 1/1 green and black Insect creature
tokens, where X is the number of creatures that
died this turn.
{2}{b}, Sacrifice X Creatures: Return target
Creature with mana value X or less from a
graveyard to the battlefield under your control.
It gains haste until end of turn. Sacrifice it at the
beginning of the next end step.