Just a shot in the arm!

Speed
As an action, you enact this plan and inject yourself or a willing ally with 5 feet of you. the target gains a +1 bonus to all checks for 10 minutes. At the end of that time, the target takes 1d6 damage. At higher levels you can choose to still provide a low bonus and damage.
Level 3: The target gains a +2 bonus to all checks for the duration and takes 2d6 damage at the end.
Level 5: The target gains a +3 bonus to all checks for the duration and takes 3d6 damage at the end.
Level 7: The target gains a +4 bonus to all checks for the duration and takes 4d6 damage at the end.
Level 9: The target gains a +5 bonus to all checks for the duration and takes 5d6 damage at the end.

Thoughts?