Rules glossary
↑ Parent rule: 711.2 A level symbol is a keyword ability that represents a static…
711.2a “{LEVEL N1-N2} [Abilities] [P/T]” means “As long as this creature has at least N1 level counters on it, but no more than N2 level counters on it, it has base power and toughness [P/T] and has [abilities].”
No sub-rules.