Enchantment - Aura, W (1) Enchant creature At the beginning of your upkeep, you may put an arrow counter on Archery Training. Enchanted creature has "{T}: This creature deals X damage to target attacking or blocking creature, where X is the number of arrow counters on Archery Training."1
Illus. Mark Brill
Putting on a counter is optional. If you forget, you cannot go back later even if it is something you usually do. [D'Angelo 1999/06/01]
Remember that you do not remove counters when using the ability. [DeLaney 1999/06/08]
If there is more than one Archery Training on a creature, each granted ability counts the counters on the Archery Training that granted that ability. [DeLaney 1999/06/13]