This leaves the Sculptor more often than not being a filler card and a bit too narrow for an A cube slot at present
Ariel, Sonic Warrior is a fitting entry for the top of this list too, given that Ursulas Return features Ariels nemesis, Ursula the Sea Witch, as a big part of its story
Translated to MTG, and it can be relatively chumped somewhat safely, but it will never die in battle that way, at least not on its owner's turn
As long as you can trigger Freerunning consistently, Eagle Vision should be a consideration for your deck
Being able to tell which kind of UW artifact deck you have brewing and leaning into cards which complement it is the most important skill for success with this archetype
He can also manipulate the life force of his enemies, draining their energy and using it to fuel his own power