While a 2 for 1 is great it is usually less good than dealing with a relevant card as you pay so much mana for the Karn and wind up with a result you can get from a card like Stupor
For example, while you cant earn any more of the last set's Mastery XP or rewards, you can still spend any unspent mastery orbs that you had already earned up until the next set releases on MTGA
Well, like saying OJ is guilty, nobody can prove it, but most people are pretty sure
You and that player each create three 1/1 white Spirit creature tokens with flying
Experienced players can combine the abilities with other synergistic cards in their deck to craft a customized approach centered on board control, sustained pressure, and adaptive planning
Magic has dozens and dozens of cool junk rares that can make for fun decks at the lower tiers of competitive play