Was playing simic Nexus, faced Esper control.
After sides he brought in Ashiok, tried to mill me out, I said fine, it works out for me, he can help me combo out.
Eventually, he milled a couple copies of Nexus and they went to Exile. This is 100% not how the interaction is supposed to work.
Edit:
Just clearing out the rules(614.1a). Nexus of Fate shuffle is not a triggered ability, it's a replacement effect. It should never touch the graveyard, and as such, should never be exiled by Ashiok, as Nexus' shuffle doesn't even use the stack.
Gaea's Blessing has a similar shuffle ability, Blessing's ability, however, is a triggered ability, and it should be exiled by Ashiok before the trigger resolves.
Edit 2:
Checked in with a Judge on https://chat.magicjudges.org/mtgrules/. Nexus should NOT be exiled by Ashiok.
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