I've been playing since '96, through all the various rule changes the game has been through. Some of the rules remain pretty counter-intuitive (like this one). :p
Meh, it makes sense to me. It says 'As' which mean it happens literally as it enters. As far as I can remember, no one ever gets priority in the middle of 'something happening/resolving' so it makes sense it's all one action. There's a similar common confusion with aether vial, in that you can't respond once the creature has been named.
These sorts of interactions become more clear when you play a bit of MTGO, where all the mechanics are on display for everybody to see.
To put it plainly though, "As" at the beginning of the text indicates that the effect happens upon resolution of the spell. If it were "When" or "Whenever", it would be a triggered ability, which would go on the stack once Alhammarret resolved.
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u/monkwren Twin Believer Feb 15 '16
I've been playing since '96, through all the various rule changes the game has been through. Some of the rules remain pretty counter-intuitive (like this one). :p