Overlord of Thorns: Venena

Every upkeep all opponents lose 1 life

{t} Add {g}{g}{g} or {b}{b}{b} to your mana pool

{b}{b} or {g}{g} Nightshade Aura: Reduce all
opponents creatures power and toughness by +4/+4
—
"The beauty of a flower can hide its deadly poison,
slowly seeping into the veins until the heart stops
beating."