Even Clives Hideaway could prove rather useful thanks to Commanders love for legendary creatures
Youll want to be jamming with Yuna, Hope of Spira (just like the potential new best deck in Standard!), use Sanctum Weaver for big mana plays, and take advantage of the many enchantress card draw options, from Sythis, Harvests Hand to Enchantresss Presence
And if you're running some graveyard snuffling cards, you can always get the two they made you throw away back
If G'raha Tia and one or more other creatures and/or artifacts you control die at the same time, its last ability will trigger once (as long as it hasn't already triggered this turn)
Provided you have a way to generate artifact tokens like Clues, Food, or Treasures, you should have no shortage of Surveil triggers