If the creature this Aura is attached to leaves the battlefield or stops being a creature before the activated ability resolves, Wingspan Stride will be put into its owner's graveyard as a state-based action before that ability resolves, and it won't be returned to its owner's hand
Cards like Parasitic ImpetusParasitic Impetus and Vow of MaliceVow of Malice were skipped because they encouraged opponents to blow us out with 2-for-1 trades, and instant-speed effects, like Supernatural StaminaSupernatural Stamina or Fake Your Own DeathFake Your Own Death, felt far too reactive to have much use, the exception being Malakir RebirthMalakir Rebirth for being stapled to a land
a Colossus Hammer as "Gaia's Dark Hammer"
I wouldn't move Giratina into play until it had 4 energy cards on it so I could use Brutal Edge and knock out most basic Pokemon in one turn and almost all other Pokemon in two turns
Alternate art styles
However, if you predict the metagame correctly, the teches may make you victorious