Sivitri, Dragon Master
Legendary Planeswalker - Sivitri
| Loyalty:
4
(CMC 4)
+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.