Paradox-21

Vigilance
Promote (Whenever a creature you control
dies, you may exile it. This creature get a
+1/+1 counter if the converted mana cost
of the creature exiled was even and two
+1/+1 counters if it was odd.)
Whenever a +1/+1 counter is placed on
Paradox-18, create a 1/1 Exo creature token.