Blossoming Bogbeast

Whenever Blossoming Bogbeast attacks, you gain 2 life. Then creatures you control gain trample and get +X/+X until end of turn, where X is the amount of life you gained this turn.

Magic Online Promos

As subtle as a bogbeast
—Witherbloom expression meaning
"crude and clumsy"

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’ll gain 2 more life from Blossoming Bogbeast and creatures you control will get +5/+5.