Some spells and abilities that give you {E} may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. You won't get any {E}.
Aether Chaser
Energy counters aren't mana. They don't go away as steps, phases, and turns end, and effects that add mana "of any type" can't give you energy counters.
Energy counters are a kind of counter that a player may have. They're not associated with any specific permanents.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Jason Rainville
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
