How strong is the Enc summoned pet?

[MaCtastic]

It depends on its use. The pet, when combined with buffs and debuffs, can be a viable pet. For example, I’ve used it to fear kite and face tank mobs in Skyfire that are part of the named cycle.

Is it as good as a charmed pet, not even close. Is it as good a pet as the mage line, no. But, it has its uses and can be used to XP when you are otherwise too distracted to manage a charmed pet.

If you keep your inventory full of daggers, you can dismiss pet while enemy is low hp and still get full xp.

As for the hp/dmg, look at the chart on the wiki on the enchanter class page.