Re: What is the quickest way to get new abilities?
All righty, I'ma give this a try. I'm not too keen on the validity of this (I did the loyalty rewards and got my skills from PvZ 1) but I ASSUME that, if you're after a particular ability, I would purchase -only- packs that focus specifically on the side you're trying to get them for.
As such, for Mega Heal Bomb, I would purchase only the Amazing Brainz Pack (35k Zombie only, 7 items), for Plant specific do Fertilizer Fun (Plants only 35k Pack). Since the special abilities are -VANILLA BASIC SKILLS- these skills will drop from these packs for sure.
I don't know if the 15k Amazing Pack Will provide skills, if it does, then I would consider it over the 35k Pack that provides both Plant and Zombie items.
As always, Rux offers the new Gw2 Skills only (Like the Bling Potato Mine for the cactus! Or the Dark Bean bomb), and as such are prone to his random selectiveness of what he sells. These also cost 500k a piece. (I'm still waiting for Mood Shield for Citron!!!!)