The 5 life points are the problem, and for a long time this card went criminally underused because players had a hard time giving their opponents life points
One mana is not a significant tempo cost which is important when investing in something that has no effect on the board
Elemental Spectacle Unlike the other new MTG cards from Dance of the Elements, the ceiling on Elemental Spectacle feels quite low
Being so expensive, Numot decks rely on a ton of early-game artifact-based ramp to run out their commander, then focus on wiping the board of lands with Armageddon and Impending Disaster and the like, locking the board down so no one can deal with your (honestly, middling) 6/6 commander
Cyclonic Rift Everyone has been in the situation where you're playing a strong game and see that one Blue player pass the turn with open
Best Lands Commander Payoffs One of the best ways to benefit from having a lot of lands in your deck is to use landfall abilities