Tidus, Ace of Zanarkand

Undefendable Forward -
Whenever Tidus attacks with at least one other creature, he gains flying and first strike until end of turn. Create a Treasure token, then you gain an experience counter.

Sublimely Magnificent Jecht Shot Mark III -
Whenever Tidus attacks alone, if you have two or more experience counters, you may tap up to two creatures defending player controls, then double Tidus' power until end of turn.