Yeah, I just looked it up. If an equipment would equip an illegal or nonexistent permanent, it becomes unattached but remains on the battlefield.
Attack with the Idol
Rsponses/blocks/take it?
Spidey: 3
Hand: 1
Library: 23
Battlefield:
(T,T,T,T,U,U) Swamp x6
(T,T) Plains x2
CoP: Green (1: The next time a green source of my choice would deal dmg to me this turn, prevent that dmg)
(T) Glint Hawk Idol (Whenever another artifact ETB under my control, I may have ~ become a 2/2 Bird artifact creature w/flying ueot.; W: ~ becomes a 2/2 Bird artifact creature w/flying ueot) *Equipped w/Sword, is 3/4* *Is 4/5 from attacking alone and exalted*
(U) Sword of the Meek (Equipped creature gets +1/+2.; Equip 2; Whenever a 1/1 creature ETB under my control, I may return ~ from my graveyard to the battlefield, then attach it to that creature)
(U) Nomads en-Kor (1/1; 0: The next 1 dmg that would be dealt to ~ this turn is dealt to target creature I control instead)
(U) Silver Knight (2/2; First Strike; Pro-red)
(S) Akrasan Squire (1/1; Exalted)
Graveyard: Death's Head Buzzard, Rabid Rats, Caravan Escort
Exile:
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rokapoke: 15
Hand: 3
Library: 22
Battlefield:
(TU) Forest x2
(TTU UUU) Mountain x6
(U) Ghitu Slinger (2/2; Human Nomad; Echo 2R. When ~ enters the battlefield, it deals 2 damage to target creature or player.)
(U) Prodigal Pyromancer (1/1; Human Wizard; T: ~ deals 1 damage to target creature or player.)
(U) Pitchburn Devils (3/3; Devil; When ~ dies, it deals 3 damage to target creature or player.)
(U) Nessian Courser (3/3; Centaur Warrior)
(S) Ghitu Slinger (2/2; Human Nomad; Echo 2R. When ~ enters the battlefield, it deals 2 damage to target creature or player.)
Graveyard: Wild Nacatl, Earthbrawn
Exile: