storm card mtg Storm, Shaker of Skies [SGL-MTG-MSC-733-ENN] (When you cast it Thousand-Year Storm (248) MTG :

Thoughtseize has been the most defining disruption spell in Modern since the inception of the format, and to this day, it is still one of the most significant spells

This creature can quickly snatch up your opponents Commanders in a Landfall-focused strategy, but even in a big blue deck that just wants to cheat things into play, Roil Elemental can seriously impede your opponents progress

S tier cards are either archetype defining or get banned, they dont come every set and that is okay

Since the graveyard is often like a second hand for many decks in Commander, denying your opponents access to it puts you at a distinct advantage

It's a wicked and very fun combo, which is why Timestream Navigator is suddenly in the limelight, and shooting up in price

Dark Ritual and Cabal Ritual are fairly nice for a burst of extra mana for an explosive turn like a turn two K'rrik, Son of Yawgmoth