Thank You so much for the response. Well, a GF card is the best. Using a GF card will give you another boost of 10% for your RP, which means your Boxes will be twice as fast as regular ones.

Red Dragon is good, but I believe Agor is the best for Silver or Gold League, but Agor uses too much mana, which is 15 mana. Before Chaos Legion and Riftwatcher release, Yodin Zaku is the most annoying Summoner, hehe.

Regard