As someone whos always trying to find ways to get certain win conditions in Commander online faster, this seems like an incredibly strong ability thats sure to, pardon the pun, warp certain games around it
Looking through Gatherer for all of the cards that have scry, it's clear that if you were able to get both of these out, a deck with a heavy scry strategy (scrytegy?) could draw a ridiculous number of cards
1x FOIL Murderous Rider (Blank Backside A/P Card)
Creature Artifact - Construct Color tag templates(None) Crystalline Giant At the beginning of combat on your turn, choose a kind of counter at random that this creature doesn't have on it from among flying, first strike, deathtouch, hexproof, lifelink, menace, reach, trample, vigilance, and +1/+1
There's no greater feeling in Magic: The Gathering than ripping the exact card you need off the top of your deck at the beginning of a turn
These decks may not be top-tier just yet, but one day they may well be, and Explorer will be indispensable