You also want the effect as an EtB one rather than a megamorph one as it has substantially more synergies to go with it
If you have a Necron Dynasties precon and are looking for cards to upgrade with, this one can be very powerful
Of course, this ability is a significantly weaker in a multiplayer game, but chances are, the players who are not targeted by its ability won't see it as a threat, so it's not at a big risk of being removed from the board
Casting Cost: Card Type: Creature - Elemental Incarnation Power / Toughness: 3 / 2 Card Text: Flash Lifelink When Solitude enters the battlefield, exile up to one other target creature
Each turn Urza gives you a Karnstruct, an artifact creature that gets +1/+1 for each artifact you control
The former is a 3/2 rare that will make another Treasure whenever you make one