Soul of Cinder

Whenever you sacrifice a creature, you may exile
that creature with a Darksign counter on it. You
may cast spells you own from exile with Darksign
counters on them. Cards you own in exile with Darksign counters gain "As an additional cost to
cast this spell, pay 5 life"
Desperation
When Soul of Cinder despairs, it gains +5/+0 and gains trample until end of turn.