Grand Arbiter Augustin IV - The List (PLST)White spells you cast cost {1} less to cast. Blue spells you cast cost {1} less to cast. Spells your opponents cast cost {1} more to cast. The Arbiter is a conduit of justice, a will so disciplined that it dispenses justice without ego or remorse.

When Boros Garrison enters the battlefield

) Changeling Outcast can't block and can't be blocked

and sharp as a knife

If any creatures with banding you control are blocking or being blocked by a creature

{T}: Add {B} or {G}

[+1]: Untap target Mountain

lifelink Healing Tears — At the beginning of your end step

Her centuries-long search is ended

remove a -1/-1 counter from each creature you control

Flying Each creature you control has vigilance if it's white

the stagnant air

and gains trample