At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game
Slow Lands from Innistrad sets are great for mana bases, useful for multicolored decks in various formats like Commander and Pioneer
You can attack with Ryu to tap it, then untap it after you've declared attackers to knock any potential blockers out of the way
If a certain brand of sleeves shuffle really well for you, or if you really like the art, I would not hesitate to grab them
Each creature that enters the battlefield under your opponents control, from Rogue Refiners to Thopter tokens, will represent a two-point life swing, which can really add up over the course of the game, making this two-mana investment a critical card against the current best deck in the format
4) Low-Heat Dryer + Lay Flat (Quick Reset) This one is for when you want a faster reset, and you are okay taking a little risk