Amber Autumn

When Amber Autumn enters the battlefield, if
there is a card named Summer Abloom you own
in exile, creatures your opponents control get
-2/-2 until end of turn.
At the beginning of your upkeep, exile Amber
Autumn and search your library for a card
named Glowing Winter. Put it onto the
battlefield and shuffle your library. Then
creatures your opponents control get -1/-1 until
end of turn.