Seven Trumpets

All opponents maximum hand size are reduced by 1 until Seven Trumpets leaves the battlefield.
{w}{1} Reduce all opponents maximum hand size by 1.
{w}{w}{2} Whenever a token you control is destroyed, target opponent exiles a permanent they control, it costs {2} more to cast.
{w}{w}{w}{w}{3} Reduce all opponents maximum hand size to 0.