({1} magic symbol) ({B} magic symbol) ({G} magic symbol) plus an additional amount of ({R} magic symbol) available.
Steps
Activate
Arc-Slogger by paying ({R} magic symbol) and exiling the top 10 cards of your library, dealing 2 damage to any target.
Repeat step 1 as desired. It is recommended to do this until your library is empty or until the amount of cards you own in exile is greater than or equal to each opponent's life total, whichever comes first.
Activate
Jarad by paying ({1} magic symbol) ({B} magic symbol) ({G} magic symbol) and sacrificing
Cosmogoyf, causing each opponent to lose life equal to
Cosmogoyf's power.
Notes
The amount of ({R} magic symbol) needed is recommended to be equal to your deck size divided by 10 (rounded up) or equal to (the largest life total among your opponents - the number of cards you own in exile)/10, rounded up - whichever is less. This will ensure you cause maximum lifeloss and/or end the game. You can also reduce an opponent's life total using
Arc-Slogger's ability, which may reduce the amount of ({R} magic symbol) needed.