Second Chance Combos
Go-Shintai of Life's Origin + Second Chance
Second Chance + Hanna, Ship's Navigator
Second Chance + Hall of Heliod's Generosity
Combo result
Infinite turns.
Prerequisites
All permanents on the battlefield. 5 or less life. and Hall of Heliod's Generosity available each turn, to cast Second Chance and activate the Hall. Ideally, a secondary source of repeatable card draw, as this combo forces you to draw Second Chance each turn (no additional cards in hand).