Seren's Reversal

Exile attacking creatures with toughness 4
or less. Their controller's get a 1/1 colorless Enthralled creature (it cannot attack or block)
for each creature exiled this way.
"Under Seren's blinding light, defiance melts
away, leaving only the empty gaze of the Enthralled. In her realm, rebellion is but a whisper lost in the wind."