Tidus, Yunas Guardian has the ability to move a counter from any target creature onto another target creature, and hes also got the unique Cheer ability, which allows him to draw cards and proliferate whenever one or more creatures (that the player controls) deals combat damage
In the rare case where enough -1/-1 counters are put on Aerith Gainsborough at the same time to make its toughness 0 or less, the number of +1/+1 counters on it before it got those -1/-1 counters will be used to determine the value of X in Aerith Gainsborough's third ability
For example, if Vincent's power was 7 when it dealt combat damage to an opponent but is reduced to 6 just before its last ability resolves, it won't deal any additional damage when the last ability resolves
On the other hand, HeiHei did 1 damage to Stich, thus resulting in you having to place a -1 Willpower counter on him
Players that earn 20 or more points during the series earn a Chocobo Pinfinity AR pin