Stale-move negation

Stale Move Decay is an event that happens whenever someone attacks in Super Smash Flash 2, as well as every other Super Smash Bros game. Whenever you attack, the move (Up special, Down smash, etc.) you used is put into an invisible list which records the last 10 attacks that you have used. The more times a certain attack appears on the list, the weaker it will be. This means that if you spam a single attack over and over again, it will become weaker and weaker. Even a fully charged side-smash against a foe with about 50% can hardly do any damage and do little knockback when it is fully-decayed (on the list all 10 times). This is why it's important to use a variety of moves.