Originally Posted by
Thajocoth
There's also a Dragon article with spells like "Animate Dead". Animate Dead specifically is a Daily that raises a dead enemy as a minion ally until the end of the encounter.
PCs don't get hordes. They get summoned creatures for the duration of the encounter (most with a single Daily I believe is 3, but you can spend multiple Dailies in 1 fight), familiars (max 1), spirit companion (Shaman only) and a beast (Beastmaster Ranger only). And I guess Unseen Servant (ritual), though I've never seen use for one. And they always share your pool of actions.
Since Wizards don't get a lot of healing surges though, having homebrew allies (that use the Wizard's actions) that count as summoned creatures (and therefore eat the Wizard's surges as they die, have half the Wizard's hp, and have the Wizard's defenses.), would only be a little broken. Not insanely broken.