SCP-3000

Defender, Deathtouch
At the beginning of your upkeep or when another creature dies, create a Y-909 token that has
"Sacrifice this token; target player puts the
top 5 cards of
his or her library into his or her graveyard"
At the beginning of your end step,
each opponent puts cards into their graveyard
from the top of their library equal
to the number of cards put into their graveyards
during their turn.