"Quality Time"

Players play a subgame starting at 20 life with
new decks, with players picking their opponent's
deck colors. As the subgame ends, the winner
gets to take a fresh turn and gains 10 life.
"Every time I play, I like to play a subgame of
Magic in my regular game of Magic so I can have
'more Magic per Magic' "
— Jace Beleren, probably