4 Energy is a 'lot', if you don't have ways of generating more of it, and while blowing up a single land a turn might seem slow, it is annoying, and Commander runs a lot of nonbasics
It works like any other Magic set: there are starter packs with two ready-made decks, smaller booster packs with random cards, and so-called Commander decks for a special game mode
Thats not to say Bootleggers' Stash is unplayable, but its nowhere close to being worth its original $60 price tag
If an opponent ends up gaining control of Karona, theyll reap the benefits of their creatures that share a typing getting pumped by +3/+3
Come check out Beth's Precon Primer for Explorers of the Deep, from The Lost Caverns of Ixalan
Since you can play it during another players turn and at instant speed, you can catch them by surprise