If Lurrus , or any other important creature gets removed, you can use Volraths Stronghold to put said creature on top of your deck and recast it from your hand when you draw it
Celestine, the Living Saint also slots into any lifegain-based deck, fitting particularly well in an Ayli, Eternal Pilgrim deck, bringing back the creatures you sacrifice to Ayli
Right away, Roshan provides a similar effect to Maskwood Nexus
These cards are amazing individually, but together they're absolutely brilliant: draw 3 lands with your Tax, then trade them in for non-land cards with Rack
If WotC hadnt announced Ultimate Masters as the last of its kind, there was a shot wed have seen some pretty major losses in the Modern market this winter
Mind Flayarrrs