binder 4 card 4-Pocket Blue or favourite sets Oxford Poly Index Card Binder

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You can create creature tokens with infect with other creatures or instant spells

Any effects that modify Ascendant Spirit's power or toughness without setting it to a specific value will apply after its base power and toughness are set, regardless of the order in which those effects were created

Casting Cost: Card Type: Legendary Creature - Mutant Ninja Rat Power / Toughness: 2 / 2 Card Text: Menace Whenever Splinter or another nontoken creature you control leaves the battlefield, create a Mutagen token

While Whir of Invention makes sure we'll have a Paradox Engine or Lifecrafter's Bestiary when we need one, we don't really have a way to search out a Cryptolith Rite, and when we don't have a copy of the enchantment, our deck is basically just a bunch of underpowered haste creatures

As for Universes Within, there are great decks from Tarkir Dragonstorm, Modern Horizons 3, Bloomburrow, and Januarys Lorwyn Eclipsed - nice