I will be discussing them as part of the 99, if you want to build dedicated commander decks around them, you can also do that, but then their evaluations can shift dramatically both from them being built around completely and consistently available
Magic: The Gathering's Game Variant Explained Plane cards are special oversized cards that were first introduced in 2009 with the release of Planechase, a collection that contained 4 packs, each with a 60-card deck, 10 plane cards, and a special planar die
There may be better cards for certain decks depending on the synergy and game plan, such as cards that provide more consistent or powerful effects
Even if you end up having your Heartfire Hero get destroyed in combat you can get one last push for damage by dealing damage to an opponent equal to Heartfire Heros power
Not only is making free copies of creatures a terrifying prospect, but the fact that Sin can provide multiple free lands is even scarier, as it provides the opponent with an amazing mana engine
Notably, its the only archetype with a Mount instead of a Vehicle as one of its signpost uncommons, but Lagorin, Soul of Alacria is a strong way to start your curve