Wanda was the CAUSE of the Chaos Wave, that Roma could Not Ascertain
Wanda was Generating the Chaos Wave.
Wanda Remade the 616 Reality
"She's starting to REMAKE Reality 616... again"
Wanda was Driving the Chaos Wave into other Realities, like when it hit OtherWorld
"it is the End ... of ALL that is ... of ALL that will Ever be"
THIS SAME Chaos Wave brought back Jaspers 616 from another Plane of Reality
THIS SAME Chaos Wave is referred to as "Scarlet Witch's Reality Warp" in the Official Handbook Of The Marvel Universe v5 2006.
In THREE separate Bios
1. "During the Scarlet Witch's 'House of M' Reality Warp, Jaspers Reformed alive merged with the Fury"
(excerpt from the Official Handbook of the Marvel Universe)
2. "Mad Jim Jaspers has also returned, brought back to life by the Scarlet Witch's recent Reality Warp"
And as I presented above, it was the Chaos Wave that manifested Jaspers 616 from another Plane. (he was dead)
3. Wanda gave Layla the power to "Perceive Divergent Realities"
"Layla showed Cage glimpses of his life prior to the Scarlet Witch's Reality Warp"