mtg dragonstorm most expensive cards / Tarkir Roiling Dragonstorm (Showcase) - Tarkir:

Play the card late game right before you want to swing out for lethal damage or activate it in response to someone blocking too sparingly

Its easily #1, and arguably among the best activated ability commanders in the game, but only because its so broken and easy to turn into a one-card infinite combo that starts the game in your command zone

While not in the original deck list, Wolf-Skull Shaman could be one way that you generate more Wolf tokens by utilizing the original build with more elf spells because of its kinship ability

Oketras dies trigger is great and all, but indestructible is better, so Eldrazi Monument gets the nod, especially since well likely have tokens to feed it