Sofie, Fighter on the Prowl

Haste, first strike.
Sofie, Fighter on the Prowl must be blocked by exactly one creature if able.
Whenever Sofie, Fighter on the Prowl becomes blocked by a creature with power 4 or greater,
put a -1/-1 counter on that creature.
Whenever a Sofie, Fighter on the Prowl or
another cat you control would be dealt damage,
you may exile it until your next upkeep instead.