Ive been even more impressed with Outcaster Trailblazer and Smuggler's Surprise, two rares that are well worth maximizing in this archetype
A dangerous one that is reminiscent of a ruler that fixes the opponent's attribute and blocks the monster's effect and attack of that attribute
With the odds of pulling one of these cards sitting at around 1 2.5% or 1-40 collectors boxes, these cards are extremely rare
The original Polymorph has you destroying a creature, with the creatures controller revealing cards until they find another creature and put that one into play
Because Finality counters only care if the card they're on goes to the graveyard, you could use a Flicker effect (of which there are many in Esper) to exile your artifact before it's destroyed and return it without a counter
With Sheoldred, the Apocalypse, there is both the showcase treatment and a Phyrexian version