Unlike Misty, this card does not rely on coin flips but rather attaches the Energy immediately from the Energy Zone
Whether it's EDH, a throwback to 2012 Standard, or Pioneer, casting Grisly SalvageGrisly Salvage will stock your graveyard up and give you a lot of flexibility in terms of how you want to develop your mana or your battlefield
If our opponent cracks a fetch land or shocks themselves, we don't even need the Kor Firewalker, which makes the combo of Boros Reckoner and Volcano Hellion pretty much the same as the recently-banned Splinter Twin combo a turn four, two-card combo
There are a number of synergies to exploit here, from just playing a lot of cheap artifacts, to blinking Malcator himself
EDHREC players, for example, run this pretty frequently in Tinybones, Trinket Thief, Tinybones, Bauble Burglar, and Tergrid, God of Fright, all commanders that excel leading decks that aim to whittle opponents down to zero resources as soon as possible