Gêr, Blood Titan

Reach
Menace
Pay X life: Oddvarg deals X damage to any
nonplayer target minus 2. Activate only
once each turn.
{t}, Pay X life: Each opponent loses
half X minus 1 life rounded down.
At the beginning of your end step sacrifice
Oddvarg unless you gained life this turn.
Whenever Oddvarg leaves the battelfield, each
player gains 3 life.