Sweeb, Warrior of Akros

First strike
Whenever a creature dies, you get an {e} (energy counter).
Sweeb, Warrior of Akros gets a +1/+0 for each {e}. During your combat phase, create a 2/2 red
warrior with haste. Exile it at the beginning of
the next end step.
If Sweeb, Warrior of Akros is in your command
zone, each {1} in it's cost, you may pay {e} rather
than pay that mana.