Combat Tooltips

Many Artifacts have an ability cost that requires
a specific charge, like electric charge or ang. mv.
An Artifact's charge capacity is listed as
power/toughness, with */1 being common
for weapons and tools, and */3 being common
for auxiliary charge units and generators.
You can strategize on how you spend Mana to
have the correct amount tapped, untapped, and
stored as charge, giving you options for abilities.