The other loyalty abilities
This is because the correct behaviour after a reprint is sometimes masked in the training data, so the network cant learn a consistent rule
Some argue hes even enough of a Game Changer to go on that list alongside Kinnan and Grand Arbiter
Couple that with the utility of Leyline of the Void, Rest in Peace, Scavenging Ooze, Lion Sash, and even Graveyard Trespasser // Graveyard Glutton and it becomes that much harder to justify running this over the competition
Representing a scaling down of power levels common in many cards from The Dark, it can still devastate a deck that relies on creatures like Llanowar Elves or Birds Of Paradise to generate extra mana, destroying them en masse if they don't attack
Lost Zone / Kyogre The Kyogre [Celebrations] build of this deck has always intrigued me because you have this wild turn of accelerating Energy to Kyogre with Mirage Gate, emptying out your deck with any card you can, using Energy Recycler [Battle Styles], and flooding your opponents board with damage for the win