Opethra, Pestilent Visage

Cumulative upkeep - An opponent gains
1 life. (At the beginning of your upkeep, put an
age counter on this permanent, then sacrifice it unless
you pay its upkeep cost for each age counter on it.)
If an opponent would gain life, that player loses
that much life instead.
{5}{b/r},{t}: Creatures blocking or blocked by
creatures you control have lifelink.