Archetype of Imagination + Stormtide Leviathan

AI draft — not yet human-reviewed. Check citations and flag anything that looks wrong. How pages are reviewed.

Overview

Archetype of Imagination gives your creatures flying and simultaneously makes creatures your opponents control lose flying and prevents them from having or gaining flying [702.9]; Stormtide Leviathan makes all lands Islands in addition to their other types [305.6] and has islandwalk and the static restriction “Creatures without flying or islandwalk can't attack.” The net result: if you control Archetype of Imagination, your creatures have flying and can attack normally (subject to summoning sickness [302.6]). Opponents’ creatures are stripped of flying and — because Archetype prevents effects that would give them flying from being created — they can only attack if they have islandwalk from some other source; Stormtide itself does not give islandwalk to other creatures (its islandwalk applies only to itself) and turning lands into Islands does not grant islandwalk to creatures [2014-07-18] and [2014-02-01].

The StackRules & CitationsDetails & Edge Cases

Step 1

Determine continuous effects from both permanents: Archetype of Imagination (your creatures have flying; opponents' creatures lose flying and can't have or gain flying) and Stormtide Leviathan (all lands are Islands in addition to their other types) [702.9] [2014-07-18].

Step 2

Apply Archetype's effects to creatures: creatures you control gain flying; creatures your opponents control lose flying and are prevented from having or gaining flying while Archetype is present [702.9] [2014-02-01].

Step 3

Apply Stormtide's land effect: every land becomes an Island in addition to its other types, so each land has ": Add ." This does not grant islandwalk to creatures — it only changes land types [305.6] [2014-07-18].

Step 4

Check attack legality: Stormtide's text says "Creatures without flying or islandwalk can't attack." Any creature that lacks both flying and islandwalk cannot be declared as an attacker. Opponents' creatures, having been stripped of flying and prevented from gaining it, can only attack if they have islandwalk from some other source (not from land types becoming Islands) or if they otherwise gain islandwalk while Archetype is present.

Step 5

Determine specific creature interactions: Stormtide itself has islandwalk (and if controlled by the Archetype controller it will also have flying from Archetype), so it can attack (subject to summoning sickness [302.6]). Opponents' creatures that do not have islandwalk cannot attack while Archetype is present.

Resolution

If you control Archetype of Imagination and Stormtide Leviathan: Stormtide still makes all lands Islands in addition to their other types [305.6] (so players control Islands). Archetype grants flying to creatures you control and removes/prevents flying for creatures your opponents control [702.9]; because of the Archetype ruling, effects that would give your opponents’ creatures flying aren’t created while Archetype is present [2014-02-01]. Stormtide’s islandwalk ability applies only to Stormtide itself; creatures that don’t have flying or islandwalk can’t attack (so your opponents’ creatures without islandwalk can’t attack) per the Leviathan text. Your creatures (which have flying from Archetype) can attack (assuming they aren’t summoning-sick) [302.6].