Cards that reference +1/+1 counters will tell you how many counters to place on a given creature
For Commanders that can afford it through cost reduction like Rowan, Scion of War, or Treasure generation like Prosper, Tome-Bound Crackle with power can end games in an instant
At best its an extremely situational combat trick in the color that wants combat tricks the least, which doesnt sound very appealing
Thanks to the reserved list, however, they are some of the most expensive land in MTG, as theyre incredibly rare
Based on actual Commander table experience, Jace still behaves like a side character but somehow wins the game anyway
The first rule is to ensure that the game can properly be played with both opponents having enough cards, however, note that 60 is just the minimum