Firstly, you can currently only trade cards of a one Diamond, two Diamond, three Diamond, four Diamond, one Star, two Star, one Shiny and two Shiny rarity
Theyre technically a four mana Black and Red 5/3 with flying and trample, but you can also choose to add X to that cost
As far as Planeswalkers go, Ajani is a great place to start for any player, giving their creatures more power, and the option to overwhelm an opponent in an instant
You shoot something for 3, and you take 1 or 2 back and then transform your Garruk
If we look at Pokmon Communication, its obvious why decks play 4 copies of it almost all of the time
If you have Silas Renn, Seeker Adept in the command zone and Slurrk, All-Ingesting has already been sent back to the command zone once, Silas Renn would not cost more to cast, while Slurrk would