This trinket has a 2% chance per successful spellcast to bypass the 5-Second Rule (5SR): usually, a successful spellcast prevents mana regeneration from Spirit for 5 seconds. Any caster, especially those that use quick spells like Flash Heal or Flash of Light, may find themselves almost always inside the 5SR, and thus rarely regenerating any mana from their Spirit. This trinket is most useful for casters who require constant mana and who have a high amount of Spirit (as a small boost in mana does not really matter in short fights).
If this does not fit their playing style, players may find other trinkets — such as [Mindtap Talisman] — to be more useful.
Behavior of 1,000,000 chain-casts using a 2.5s Greater Heal