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Aetherspouts | Instant | | For each attacking creature, its owner puts it on the top or bottom of their library. | Dan Scott
Chasm Skulker | Creature | Squid Horror | Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.) | Jack Wang
Chief Engineer | Creature | Vedalken Artificer | Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.) | Steven Belledin
Jalira, Master Polymorphist | Legendary Creature | Human Wizard | {2}{U}, {T}, Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order. | Steve Prescott
Master of Predicaments | Creature | Sphinx | Flying
Whenever Master of Predicaments deals combat damage to a player, choose a card in your hand. That player guesses whether the card's mana value is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost. | Matt Stewart
Mercurial Pretender | Creature | Shapeshifter | You may have Mercurial Pretender enter the battlefield as a copy of a creature you control, except it has "{2}{U}{U}: Return this creature to its owner's hand." | Izzy
Polymorphist's Jest | Instant | | Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1. | Craig J Spearing
Stormtide Leviathan | Creature | Leviathan | Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
All lands are Islands in addition to their other types.
Creatures without flying or islandwalk can't attack. | Karl Kopinski
Shivan Reef | Land | | {T}: Add {C}.
{T}: Add {U} or {R}. Shivan Reef deals 1 damage to you. | Rob Alexander
Yavimaya Coast | Land | | {T}: Add {C}.
{T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you. | Anthony S. Waters
