Counter target spell if its mana value is less than or equal to the greatest mana value among permanents you control.
"Maybe next time."
Illustrated by Dave Dorman · Scourge · #33
There are no rulings for Dispersal Shield.
Put X +1/+1 counters on target creature you control. Then counter up to one target spell unless its controller pays mana equal to the greatest power among creatures you control.
Counter target spell. If the amount of mana spent to cast that spell was less than its mana value, you draw a card.
Counter target spell unless its controller pays , where X is the greatest power among creatures you control.
Counter target spell. You get an amount of (energy counters) equal to its mana value.
Counter target spell unless its controller pays , where X is the number of words in the name with the most words among permanents you control.
Counter target spell unless its controller pays for each blue permanent you control.