Olgmath, Tyrant of Cryth

Lifelink,Trample
Whenever you gain a life, deal one damage to target opponent.
Whenever a creature enters the battlefield, deal 1 damage to target creature
{b}{b}{2},{t}: sacrifice a creature the choose one.
:Put x 1/1 horrors with lifelink on the battlefield where x is is it's power
:gain X life where x is it;s power.