Dubious Claims

At the beginning of your upkeep, declare
whether you will attack with creatures this turn.
Each opponent secretly notes whether they
believe you. At the beginning of the next end
step, each opponent reveals their bet. Each
player who betted incorrectly discards a card and
loses 2 life. If no players betted correctly, you
draw a card and you gain 2 life.
"My source is that I made it the f*** up."
— Senator Stephen Armstrong