Maelstrom Dilation

[ELLERfeller]

So my opponent has  {Maelstrom Nexus} out and I have  {Mind's Dilation} out, he casts his first spell how would these interactions play out?

[redwolv]

Because two tigers happen at the same time by different players they will be placed on the stack in AP/NAP.

So he places his nexus trigger on the stack then you place your Dilation trigger.

Stack(resolving from top to bottom)
dilation trigger
Nexus's cascade trigger


So first thing he does is exile the top card and you can cast it if you want.
Then the nexus's cascade effect happens after that.

(Relevant ruling to follow)
101.4.: If multiple players would make choices and/or take actions at the same time, the active player (the player whose turn it is) makes any choices required, then the next player in turn order (usually the player seated to the active player's left) makes any choices required, followed by the remaining nonactive players in turn order. Then the actions happen simultaneously. This rule is often referred to as the "Active Player, Nonactive Player (APNAP) order" rule.
Example: A card reads "Each player sacrifices a creature." First, the active player chooses a creature he or she controls. Then each of the nonactive players, in turn order, chooses a creature he or she controls. Then all creatures chosen this way are sacrificed simultaneously.


405.3.: If an effect puts two or more objects on the stack at the same time, those controlled by the active player are put on lowest, followed by each other player's objects in APNAP order (see rule 101.4). If a player controls more than one of these objects, that player chooses their relative order on the stack.

[ELLERfeller]

Awesome! Thank you!

[redwolv]

 You're welcome