Flashfreeze [Magic 2012] Elder Demon Scholar of Sparks:

Scholar of Sparks:

but the danger remains

Set: Zendikar Rising Commander Type: Creature — Sphinx Rogue Rarity: Rare Cost: {5}{U}{U} Prowl {3}{U} (You may cast this spell for its prowl cost if you dealt combat damage to a player this turn with a Sphinx or Rogue

or triggered ability

Set: Khans of Tarkir Promos Type: Enchantment Rarity: Rare Cost: {G}{U}{R} Creatures you control have haste

Flashfreeze [Magic 2012] Elder Demon Scholar of Sparks:Set: Magic 2012 Type: Instant Rarity: Uncommon Cost: {1}{U} Counter target red or green spell. "Is cold merely the absence of heat, or a force unto itself? Would a display of its power help you decide?" Zubarek, Icewinder Magus