Trial by Combat

Each player chooses a creature they control, then
takes turns flipping a coin so that each player
makes the same number of flips. If a player loses
a flip, Trial by Combat deals 1 damage to their
chosen creature. Continue in this way until one
of the selected creatures remain. If one creature remains, that creatures controller gains 5 life and creates two colorless artifact tokens named Gold
with "Sacrifice this artifact: Add one mana of
any color to your mana pool."