I need a way to apply a magic effect to the player via a script as if they had consumed a potion. Any ideas on how to do this? I've scoured the Actor, ObjectReference, Potion, ActiveMagicEffect, and MagicEffect script pages on the wiki, but have come up dry.

Anyone else been able to do anything like this?

Make a spell/ability/any magic, apply your magic effect on it, set the [no duration] on the mgef and build in smth like this into your script:
Game.getPlayer().cast(spellproperty)

Fairly certain that version of the function is from the old language.

Searching for it in Papyrus, I came upon the new one, which needs to be called on a spell, as opposed to an object reference or actor. With any luck, it should do what I need it to.

Thanks for pointing me in the right direction!

Create a spell that uses the magic effect. Then:

Game.GetPlayer().AddSpell(spell_name)

Doesn't addspell TEACH them the spell?

Yeah, turns out the actor doesn't even need to know the spell.

Using [Spell].Cast(Game.GetPlayer()) works.

This would only work if the spell was an ability, if it is an equipable spell it would only teach them the spell as redwood said