Thingol’s Injunction

Decree {2}{w}{w} (You may exile this card from
your opening hand. If you do, you may cast it
for its decree cost as long as it remains exiled.)
Until end of turn, spells target player casts
cost {1} more to cast for each spell cast this
turn. Then, if this spell was cast from exile,
that player skips their next combat step.