Spark Twins

When Spark Twins enters the battlefield, [ create
a 2/2 blue Wizard creature token with, Instant
and sorcery spells you cast cost {1} less to cast. ]
Instant and sorcery spells you cast cost {1} less to
cast.
Arcane {1}{u}{r} (You may cast this spell from
your hand for its Arcane cost, if you do, it
becomes an instant spell, then remove all text
not in brackets.)