Artistry of Intellect

Rehearse (At the beginning of your upkeep, put a
verse counter on this permanent.)
Instant and sorcery spells you cast cost {1} less to
cast for each verse counter on Artistry of Intellect.
Whenever you cast an instant or sorcery spell,
remove all verse counters from Artistry of
Intellect.
From inspiration spring innovation at its finest.