You have taken a great interest in supporting your allies and have decided that your magic should be used for them instead of you. The features from this class will allow certain abilities that focus on buffing and healing teammates.

Allied Infusion

Your great interest in buffing your allies has led you to imbuing more of your own magic into their items. You gain two bonus infusions that can only be used on allies. These infusions can be any of the infusions listed with the other Artificer infusions. The infusion immediately ends if you ever try to use an item that has an allied infusion within it. You gain two more Allied infusions at 5th level, and again at 9th, and 15th level. 

Allied Healing

Your extreme interest in protecting your allies has led you to use your magic to heal them when they get attacked. When any ally that you can see within 30ft takes any kind of damage, you can use your reaction to heal them 1d10 + your intelligence modifier (Note: you cannot use this ability on yourself.) This ability can be used a number of times equal to half your artificer level rounded down (minimum of 1). You regain all expended uses of this ability after finishing a long rest. 

Allied Supporter Spells

You always have certain spells prepared after you reach particular levels in this class, as shown in the Allied Supporter spells table. These spells count as artificer spells for you, but they don’t count against the number of artificer spells you prepare.

Allied Supporter Spells Table:

3rd level: bless, shield

5th level: healing spirit, zone of truth

9th level: counterspell, remove curse

13th level: death ward, freedom of movement

17th level: circle of power, mass cure wounds

Allied Life force

Your interest in supporting your allies has gone further than healing and enhancing their gear, so you learned how to bolster their life force. As an action on your turn, you can give up to 4 allies that you can see within 60ft temporary hit points equal to 3d8 + your spell attack modifier. (Note: you cannot use this ability on yourself). You can use this ability again when you finish a long rest.

Allied Invigoration

Your supreme will to keep your allies in the fight has led to you to discovering a type of invigorating magic to use on them. As an action on your turn, you can consume as many of your spell slots as you want. For each slot you consume, each ally within 60ft of you that you can see recovers a spell slot of the same level. For example, you can consume 3 first level, one 2nd level, and two 5th level spell slots, and every ally within the radius regains those same level spells slots and can cast those level spells again. (Note: any of your allies who already have full spell slots gain nothing, and they cannot gain more than their maximum number of spell slots)