His abilities provide crucial utility, either untapping an artifact for value or tutoring for a specific low-cost artifact from your library
Reach with Longshot Squad: While Reach is often a defensive mechanic, you won't ever find me complaining about having it when facing off against a flock of the best creatures in the game, Storm Crow
Spawnsire of Ulamog : Again not exactly a Wish card, but it can bring any number of Eldrazi cards you own from outside the game into play for a 20 mana activation cost
Discontinuity and Time Stop are always fun to play when a player is about to cast an important creature or spell for their combo, because youre cancelling their whole turn
We have a solid curve, and Murderous Rider is a great removal spell since it doubles as a Zombie, but the downside is we only have a single lord in Death Baron
This kind of spell is always more narrow than it looks though