Pyrotechnic Dominance

Choose two X times.
• Exile the top X cards of your deck. You may
those cards until the end of your next turn.
• For each other player, destroy target permanent
they control with mana value X or less.
• Creatures you control get +X/+0 and trample
until end of turn.
Flashback—{x}{r}{r}, Sacrifice all permanents
that generated mana used to pay for this cost.