You can support it with a fair game, which Hemsley did somewhat, but it can be a proactive fair game, and I think attacking your opponent from multiple angles makes it a lot harder for them to prepare for (are they trying to stop your creatures/Stoneforge or your graveyard?) Another card that I think is way too good not to see play is Dakkon, Shadow Slayer
Say, for example, you have a sealed deck that's primarily red and green, but you want to play with one copy of Garruk, Apex Predator
You may cast that card by paying life equal to the spell's mana value rather than paying its mana cost
A few defensive equipment, like Swiftfoot Boots and Mithril Coat, are vital to protect our Voltron commander
These can be cast earlier in the game if you need to, or you can pump more mana into them later on for a big payoff