Well start with the new decklist for our new and improved version and then go over our rationale for the changes
High Troller generates ludicrously swingy board states, which is exactly what some Commander players love to do (and I had a blast losing to it in a protracted board game where it survived by ludicrous variance and eventually killed me)
Two, if you're a spellslinger deck, it's likely that you're also in blue, and Thing in the IceThing in the Ice is right there at four counters to get you an extra turn to untap and go nuts with the actual GuttersnipeGuttersnipe effect you're playing
Top celtic battle world (with Roman Vampires) Think Braveheart, but with more realistic accents and gladiatorial bloodsuckers
Being able to play lands directly from your graveyard has empowered quite a few strategies in Magic, most notably Legacy Lands and Vintage Workshop, but you'll occasionally see it in Modern Golgari decks too
It's a 0/1 Kobold that is casted for 0 mana, and the card text