They also work as a sneaky extra layer of protection for Kaalia by bringing it back from the grave in a pinch
Do you feed the fish? is a question as old as Commander, and because of this infamy, many times the Mystic Remora player will sit back and watch as nothing happens for several turns until, eventually, the cumulative upkeep cost becomes too exhaustive, the Mystic Remora is sacrificed, and suddenly the game begins in earnest
Other creatures that grant this effect are: Souls Attendant (opponents creatures too) Soul Warden (opponents creatures too) Suture Priest In addition to the two list above, Authority of the Consuls will give you 1 life every time a creature enters the battlefield under an opponents control
Encourage drafters to put a die or their phone on top of their unopened packs so they dont get picked up prematurely
Fear grants it some solid evasion to ensure it hits and your opponent is most likely done for if you hit them for something between 40 and 50
As a quick related aside, theres a common anti-Reserved List argument that most of these cards will hold their value even though a reprint because even if they print more Underground Seas, they arent going to print any more Beta Underground Seas