Darien, the Great Protector

Partner with Rildan, The Great Equalizer
This spell cannot be countered
Spells cannot be countered
Cards in the graveyard cannot leave the graveyard
or be the target of spells or abilities
All permanents gain Vigilance and cannot change control,
be sacrificed, exiled, returned to hand or library,
or be destroyed by anything but combat damage
All cards lose all keywords other than Vigilance
Prevent all noncombat damage