Sivitri, Dragon Master 43 (Commander: Dominaria United)

+1: Until your next turn, creatures can't attack you or planeswalkers you control unless their controller pays 2 life for each of those creatures. −3: Search your library for a Dragon card, reveal it, put it into your hand, then shuffle. −7: Destroy all non-Dragon creatures. Sivitri, Dragon Master can be your commander.

NM - $13.60
LP - $10.90
MP - $8.20
HP - $5.50
DMG - $2.80