Theres a ton of applications for this: you can elk your own cards once youre done with their effects, you can elk the Food token he makes, and best of all, you can elk your opponents big creatures and artifacts essentially making Oko a persistent answer to that your opponent will need to play around
Sure, some of these cards see bits of play in Commander, but the selection is rather rough
There are a lot of similarities between Woolly Thoctar and Watchwolf, as each pushes the envelope of what a vanilla creature can do at its point on the mana curve
If you load up on creature spells, then it allowing everyone to draw cards except for a player playing a noncreature spell becomes less of an issue
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For instance, Doubling Season, a popular Commander card that was reprinted in the Enchanting Tales Bonus Sheet, is not Standard legal because of this reprint