Vivian, Izzet Grand Strategist

Instant and sorcery spells you cast have
improvise (Your artifacts can help cast this spell.
Each artifact you tap after you're done activating
mana abilities pays for {1}.)
Whenever you cast an instant or sorcery spell,
you may pay {1}. If you do, create a 1/1 Servo
creature token.
"Impress me."