Case of the Uneaten Feast Theres a handful of gain a life when a creature you control enters effects that broadly fall under this ranking, but I want to give the spotlight to Case of the Uneaten Feast
These transformed Glimmer characters are known as "Floodborn", where some cause trouble for the Illumineers
You can destroy the day or night designation with Naturalize 2
Creatures (4) Lands (20) Spells (36) This was the first successful tournament deck to use Necropotence as a tutor. If he had two Lotus Petals, it wasnt unthinkable for him to Dark Ritual out a Necropotence on turn one, Necro for 16-19 (depending on his hand, he might want to save enough life to Vampiric Tutor plus drawing one more card)
If a source would deal damage to a player or battle this turn, it deals that much damage plus 2 instead
Cards like Soul Warden and Soul's Attendant provide a steady stream of life, but you can have some impressive turns with something like Children of Korlis to pay all your life twice