Time Rift is an ability (Q) of Antonidas the Arcane Master in my Duel of Gods map (Hero Siege/Aeon of Strife/Arena).
Time Rift: sends a surge of arcane energy in a straight line, breaking the rules of time and trapping both allies and enemies in a time singularity for 2.25 seconds, rendering them invulnerable. When enemies return they take 50 plus a 15% of their max life as true damage, while allies have their life restored by the same amount. Max 600 damage against monsters and superior units.
This cap increases by 5% per level.
Note: restore can't critical cast. (there is a stat called critical cast that causes abilities to crit for 50% extra damage or healing in the damage calculation).
Scalings: +3.5 damage per Level +30% Spell Power Cooldown: 12 seconds