So, what does the Planula do exactly? Well, it's a healing item that doesn't do much apart from heal the player. The Planula allows the player to receive flat healing when attacked, according to the Risk of Rain 2 wiki the Planula will “Heal from incoming damage for 15 (+15 per stack)”.

What does transcendence do in Risk of Rain 2?

The Transcendence is a lunar item in Risk of Rain 2. It increases the holder's maximum health by 50% (+25% per stack), but replaces all but 1 of their health with shields, which regenerate over a period of 2 seconds after avoiding damage for 7 seconds.

How do you get boss items in Risk of Rain 2?

Common, Uncommon and Legendary items are found in item chests, terminals and Shrines of Chance. Defeating a teleporter boss causes the teleporter to drop Uncommon gear, with the exception of three that can drop unique, Boss items. Lunar gear is purchased with Lunar Coins via Lunar Pods or at the Bazaar Between Time.