Toxrill is, simply, a great self-contained commander
Right now, you can buy the bundles as part of a limited time deal for just $190, or less than $50 per deck
That's $9.97 under current market value compared to TCGplayer's $176.98 for 30 play boosters and includes Amazon's preorder price guarantee
If your deck wants most of these roles then it is OK filler, otherwise it is simply way too underpowered to be of much use
it not only removes counters from any number of creatures on the battlefield (to represent Sins limitation of technological advancement), but also returns to your library when it dies rather than dying, meaning it cant be conventionally defeated
Some cards give you energy counters, usually on resolution, but some cards add energy during other phases as a static ability, attack triggers, damage triggers, and activated abilities