Algernon, Wise Observer

[Tales] [Quickcast]
Your opponent cannot play cards with total cost greater than the number of magic stones they control.
[Enter] >>> Return target spell or non-magic stone entity your opponent controls with total cost equal to or greater than the number of magic stones they control to its owner's hand. If you do, draw a card.
[Revolution]
If an ability or effect of this card would check the number of magic stones your opponent controls, you may have it refer to that number minus the number of J/rulers they control instead.