恶意收购

The unit will remain in Banishment.

Units cannot be played to a base of a player other than their own controller under any circumstances. Because the owner of the unit is the one being instructed to play the unit, and the location they are being instructed to play it to is a base other than their own, it isn’t possible to play the unit. During the check legality step of finalization, the unit will be returned to banishment from the chain and all actions taken will be undone.

来源：Riftbound: Vendetta Rules FAQ and Clarifications (newest FAQ found)

No, Ezreal won’t help with Deflect costs, and Deflect is not optional. Deflect is a mandatory additional cost, meaning you must pay it if you want to finalize a spell or ability that chooses something with Deflect. It’s true that you can choose not to pay Deflect costs for triggered abilities by choosing not to finalize them, but that doesn’t make it an optional cost.

Hostile Takeover

来源：Riftbound Spiritforged FAQ

You’ll start a noncombat showdown. (Hostile Takeover’s reminder text is a little misleading in this regard—you have to have some kind of showdown before you can conquer.) This ruling applies any time you have a unit at a battlefield when your opponent still controls that battlefield, but doesn’t have any units there. (Yes, that can happen. Hostile Takeover and Stormbringer are the easiest ways to do it.)

There’s a gap in the current rules that leaves this situation without an obvious outcome. We plan to address that gap in the next regular rules update. The issue is surprisingly complex, and we’re not 100% sure what the answer will be when we’re done.

In the meantime, though, we believe starting a noncombat showdown is the least disruptive way to handle this scenario. If you need really precise timing: assume that your opponent loses control of the battlefield in the same cleanup that begins the showdown, even though ordinarily control is “frozen” once the battlefield becomes contested.

Temporal Portal

来源：Riftbound Spiritforged FAQ