SCP-001 (When Day Breaks)

When SCP-001 (When Day Breaks) enters the battlefield, exile all creatures.
If a creature would die, exile it instead.
Whenever a creature is exiled, create a 0/0
Black SCP horror token named SCP-001-A
and put X +1/+1 counters on it, where X is
the toughness of the exiled creature.
"Personnel exposed to SCP-001 are to be considered
lost. Compromised personnel are to be abandoned.
Euthanization is not to be attempted."