Brian, Adept Instrumentalist

Flash
First Strike
When Brian, Adept Instrumentalist enters the battlefield, the order of play reverses.
Whenever you cast an instant or sorcery spell,
put a song counter on Brian. Then, up to X creatures get +1/+0 until end of turn, where
X is the number of song counters on Brian.
"Let's make music! BRIIAAANN!!"