You are never forced to activate mana abilities to pay costs, so if there is a mandatory additional mana cost (such as from Thalia, Guardian of Thraben), you can decline to activate mana abilities to pay for it and hence fail to cast the suspended card, leaving it in exile
Personally, if Im buying a high dollar ungraded card that I might have some questions about, the Authenticity Guarantee might be enough to push me over the line
We've got the decklists for these wild Commander decks here, and you can preorder them now from your local game store, online retailers like Amazon, and elsewhere Magic products are sold
As far as play goes, Living Energy plays very ramp heavy
65,- Display English approx
A punchy blue background gives this just the contrast it needs to stand out in a set filled with elite artwork