Essence Pulse

You gain 2 life. Each creature gets -X/-X until end of turn, where X is the amount of life you gained this turn.

Magic Online Promos

"There is nothing so invigorating and stubbornly belligerent as the pure energy of life."
—Valentin, Witherbloom dean

Commander 2021

This ability counts the total amount of life gained without considering any life you lost during that turn. For example, if you lost 3 life and gained 3 life earlier in the turn, you will gain 2 more life from Essence Pulse and each creature will get -5/-5.