Graf Mole turns every Clue you sacrifice into a chunk of lifegain, helping you stay healthy while drawing cards
Urza's Command can drop the power of other player's dorks out of nowhere, make a Powerstone, make a tapped Construct token to win the game, and then scry and draw, so I think that the Construct and scry and card draw are the default here, and that's pretty good for four mana instant speed
The first time I saw it in print, I was scared it would bring the whole format down
Genji Glove, being colorless, opens up the effect to literally any deck
Where Ooze really has the potential to shine is with blink shenanigans, as it blinks far better than Skyclave Apparition does
The jump to huge lands, aka full-art, was only logical