If a planeswalker is attacked and a player gains control of it after it was declared to be attacked, will it still be attacked as its now under control of a different player ?
Example:
Player A) has Karn Liberated and it gets attacked by player B) with a Phyrexian Dreadnought.
After Karn was declared to be attacked, player C) gains control of it by exchanging it with Avarice Totem.
Generally, anything that changes control is removed from combat. A creature attacking such a planeswalker is still considered attacking, just not attacking anything or anyone. The corresponding defending player is still the player who controlled the planeswalker when the creature was declared attacking it.
506.4. A permanent is removed from combat if it leaves the battlefield, if its controller changes, if it phases out, if an effect specifically removes it from combat, if it’s a planeswalker that’s being attacked and stops being a planeswalker, or if it’s an attacking or blocking creature that regenerates (see rule 701.14) or stops being a creature. A creature that’s removed from combat stops being an attacking, blocking, blocked, and/or unblocked creature. A planeswalker that’s removed from combat stops being attacked.
Example:
Player A) has Karn Liberated and it gets attacked by player B) with a Phyrexian Dreadnought.
After Karn was declared to be attacked, player C) gains control of it by exchanging it with Avarice Totem.
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506.4. A permanent is removed from combat if it leaves the battlefield, if its controller changes, if it phases out, if an effect specifically removes it from combat, if it’s a planeswalker that’s being attacked and stops being a planeswalker, or if it’s an attacking or blocking creature that regenerates (see rule 701.14) or stops being a creature. A creature that’s removed from combat stops being an attacking, blocking, blocked, and/or unblocked creature. A planeswalker that’s removed from combat stops being attacked.
Former Rules Advisor
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