mtg card sleeves dragon shield Matte (Forest Green) The Landfall Series lets you draw the power to protect your cards from the very lands themselves Dragon Shield Matte Deck Protector

Valiant doesn't demand a spell, necessarily

Emperor of Bones' effect isn't once per turn, so if it's exiled a handful of cards you can bring them all back in one big swoop

Priced at over $94, its not quite in that $10 range, but its still something people will be happy to pick up cheaper (even if their opponents arent happy about it!)

Three Pro Tour Champions played Erode to the Las Vegas Top 8: Matt Nass in an Ouroboroid deck, plus Finalist Christoffer Larsen and eventual winner Nathan Steuer in their nearly identical Selesnya Landfall

You could say that most instants and sorceries work really well with a lot of wizards as a general rule

Food tokens already generate value by giving the player life, but this makes food tokens on par, if not better, than clue tokens