Ruretto

Each player who has a +1/+1 counter must play. {1}, Wager any amount of +1/+1 counters, player chooses Cho (even) or Han (odd), Roll two D20:
If results are Cho, player doubles +1/+1 counters
they wagered and distribute them to creatures
they control. If results are Han, player receives
life for each counter wagered and return wagered
+1/+1 counters to creatures they control. Each
player that loses returns counters they wagered to
creatures they control in the form of -1/-1
counters, then