mtg choose a card from outside the game Flavor Judge Karn's -2 ability says "choose

On the face of it it might appear as if Ranger has there modes of action, those being two lands, one land and no lands which is true in some respects but it does undermine the potency of Ranger

Kami of Celebration Kami of Celebration rewards you attacking with modified creatures with impulsive card advantage, and then casting that card makes even more of your creatures modified to keep the ball rolling

It can very quickly spit out a ton of tokens, and those tokens can then be turned into sacrifice fodder for game-winning effects or simply more mana

Then you can add more and more to keep them tapped with her proliferate

Which would you pick a deck with a flat 60% winrate each game, a deck with a 80% game 1 winrate and 50% post-board, or a deck with a 20% game 1 winrate and 80% post-board