Oko has a +1 ability that turns any creature or artifact an enemy owns into a 3/3 elk
Whats good in Commander is often terrible everywhere else, so having a surplus of these in a Standard set - or even one meant for Modern and beyond - often detracts from the number of cards thatll actually see play in that format
It's a flying hasty Kiln Fiend of sorts, its disgusting in multiples, and it can be plotted to capitalize on a big explosive turn
When you think of cards that most people know Black Lotus aside you tend to think of the likes of Delver of Secrets, Lightning Bolt, Bloodbraid Elf, Jace, the Mind Sculptor, Siege Rhino and, well, Griselbrand
Koga Koga is an interesting and powerful Supporter card that can serve as the basis of an entire deck
For legendary creature-focused decks, the front side tends to be better whereas more open decks and planeswalker ones the backside is better