Monsters Set by the effect of “Elemental Hero Chaos Neos” are Set in Defense Position.
“Elemental Hero Chaos Neos” can be Special Summoned from the Graveyard if it was first Special Summoned according to its text and sent to the Graveyard afterwards. “Elemental Hero Chaos Neos” can also be Special Summoned from the Removed Zone if it was Special Summoned according to its text and then removed from play afterwards.
If “Elemental Hero Chaos Neos” is destroyed before it can return to the Fusion Deck by its own effect, the effect of Setting every face-up monster on the field disappears.
You can activate the coin toss effect of “Elemental Hero Chaos Neos” even while there are no monsters on your opponent’s side of the field.
If you activate the coin toss effect of “Elemental Hero Chaos Neos” and get 2 Heads, if “Elemental Hero Chaos Neos” is flipped face-down or removed from the field the effects of all face-up monsters on your opponent’s side of the field will still be negated.
The effect of returning “Elemental Hero Chaos Neos” to the Fusion Deck and Setting all face-up monsters on the field are one effect. If “Elemental Hero Chaos Neos” is not returned to the Fusion Deck (because of “Neo Space”, etc.) face-up monsters on the field will not be Set.