>>20339713Obtaining event pokemon is either being ready for Nintendo's events or cheat. I don't know why they couldn't make Wonder Safari(like Friend Safaris, but very different) for legendaries, with pseudorandom terrain generation(for 9-12 areas) and roaming legendaries, along with powerful trainers.
Some of them are found ingame (Heatran, Cresselia, Birds, beasts, etc), while others cost 1-2 dollars on the eShop and are free when the mystery gift is first distributed, but cost later when the event giveaway is missed.