Haruspex

Haruspex attacks each turn unless a Tyranid Synapse Creature is on the battlefield under your control
Whenever Haruspex destroys another creature, place one Biomass counter on it
{t}{b}: remove all Biomass counters on Haruspex and you may gain X life , or add X mana of any color to your mana pool, where X is the amount of Biomass counters removed