When you make an attack action, you may make a bite attack against an enemy that deals 1d6 piercing or slashing damage (whichever is appropriate). You are proficient with attacks made in this way, and you may add your strength modifier to the attack and damage roll. If the target is grappled by you, the attack roll is done at advantage. 

Also, as a bonus action, you may attempt to tackle them. Make an attack roll, to which you may add your strength modifier, and proficiency bonus. If the attack hits they take 1d4 bludgeoning damage, after which they must contest being grappled with a dexterity check against your attack roll. If they fail they are considered grappled until the end of their next turn unless they succeed another grapple-check at the beginning of their next turn.

If the Enspelled Hound has magical weapon equipped, these attacks deal magical damage for the purposes of bypassing resistances.

Armor and weapons which require attunement now become a part of you, augmenting your natural capabilities.

Equipping an attuned armor or weapon causes it to disappear into your hide for as long as you remain connected to the magic that sustains you (see 'Uplifted' racial feature). They become no longer visible, impose no weight, and if you would gain disadvantage on stealth, it no longer does (though you are still considered armored). 

You cannot wield weapons traditionally, though you may equip them. Once equipped, an attuned weapon will augment your Bite attack, causing it to do magic damage for the purposes of bypassing resistances, as well as any effects the weapon might have.

No items equipped in this way can be removed without the permission of the Enspelled hound. If connection to the magic which sustains you is lost, the items appear on you as they normally would, and are otherwise unaffected by 'Enspelled Hide'

Creatures which have undergone the process of uplifting have a nigh infinite pool of magic which sustains them. So long as this pool is replenished by sleep, and consuming the proper amount of food and water, the Enspelled Hound is considered the same age as when they were first uplifted, suffers no ill effects of old age, and cannot suffer the effects of a spell or condition which would reduce their intelligence score.

However, there are ways to interrupt the flow of magic which sustains you.

• Dispel magic: when cast upon you, or anything you are touching, the dispel magic spell has the additional effect of stunning you. While stunned in this way, the magic which sustains you and your connection to it is interrupted for as long as this condition persists. You may end the stun at the beginning of your next turn, by rolling a Constitution saving throw, using the caster's spell-save DC. 
• Anti-Magic: when under the influence of anti-magic, be it a curse, a spell, or by entering a field, once per round, whenever you enter, exit, or begin your turn under its effects, your connection to the magic which sustains you is interrupted until the beginning of your next turn. You are not stunned during this time.

An Interrupted Connection

At the end of your turn, if your connection to the magic which sustains you is interrupted, your Intelligence score is reduced by 2. This will occur repeatedly, every turn your connection is interrupted, until your connection is restored. Your connection may be restored by ending your turn while not under the effects of dispel magic, or anti-magic. Once restored, at the end of your next turn, your intelligence is increased by 2 per turn, unless your connection to the magic which sustains you is severed.

A Severed Connection

If your connection to the magic which sustains you is interrupted for long enough that your intelligence is reduced by half its total value, your connection to it is temporarily severed. During which time your intelligence cannot be restored through normal means, you lose any capacity for spellcasting you might have, and you are no longer protected from effects which would reduce your Intelligence score further. Also, your physical age will rapidly begin to catch up with your chronological age, and you take a point of exhaustion for each time you have ever suffered a severed connection. 

Once your connection is severed, to restore it once more, you must resolve your points of exhaustion resulting from it, or by taking the effect of a Greater Restoration spell (which would also resolve your exhaustion points resultant from a severed connection). 

As a canine, you have keen senses. As a result, you have advantage on Wisdom (Perception) checks that rely on hearing or smell. 

Also, you have darkvision, to a range of 60'.

So long as you remain connected to the magic that sustains you (see 'Uplifted') the Enspelled Hound can speak, read, and write Common. Additionally, they can communicate with other canines in their own language, as if under a continuous speak with animals spell.

Your Constitution score increases by 2, strength by 1

Enspelled Hounds are medium sized and can be anywhere from 50 to 350 pounds.

Your base walking speed is 40 feet.