Sliver Vatmother

Eminence—At the beginning of each end step, if
an opponent lost life this turn, create a 1/1 sliver creature token.
Vigilance, Trample
{4}, All slivers get +X/+X until end of turn
where X is the number of slivers you control.
"Please don't kill me." Sahura said, as the monster silently dragged him into the dark.