Item/Weapon Name: Non-instant E-Tank
Creator: King Yamato
Last Version: v1
The E-Tank present on Mega Man 8-Bit Deathmatch is an item that fully heals you upon using.
King Yamato made a version of the E-Tank that needs a bit of time to heal, but is still pretty fast to fully heal the player back to 100% health.
The main reason behind this change was because the normal E-Tank allows the player to escape death even if he was to take direct hits from, say, consecutive Hard Knuckles. This new E-Tank will let players heal fully as long as they aren't killed before the heal can end.
So, it can be considered a "nerf" to the normal E-Tank, but it's mostly a question about style.