If you're already familiar with competitive card games, consider choosing your colors based on the strategy type that best fits your personal style
Its pretty amazing in multiples too, so people are going wild on this and if you have any copies, Id be selling
(6/15/2010) You may sacrifice a permanent as a special action, even if the effect that allows you to do so comes from an opponent's permanent (such as Damping Engine or Volrath's Curse)
The planeswalker types are Ajani, Aminatou, Angrath, Arlinn, Ashiok, Bolas, Chandra, Dack, Daretti, Davriel, Domri, Dovin, Elspeth, Estrid, Freyalise, Garruk, Gideon, Huatli, Jace, Jaya, Karn, Kasmina, Kaya, Kiora, Koth, Liliana, Nahiri, Narset, Nissa, Nixilis, Ral, Rowan, Saheeli, Samut, Sarkhan, Serra, Sorin, Tamiyo, Teferi, Teyo, Tezzeret, Tibalt, Ugin, Venser, Vivien, Vraska, Will, Windgrace, Wrenn, Xenagos, Yanggu, and Yanling
This card would be terrifying in the right shell