The new cards are tournament legal in Commander, Legacy and Vintage
The color combination and Killian let you focus on one key attacker and gives you lots of options for combat
Like most Magic: The Gathering cards, the value of Counterspell depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Friday Night Magic 2005)
You'll also be playing many cards that drain lore from your opponent's point total
No matter what, you'll get all the benefits you are capable of receiving assuming each of your Myriad tokens hit - if the player with the most is you , you won't get it, but you will if it's anyone else
That was my attempt to instill in your subconscious how utterly ridiculous this common is