Rules glossary
↑ Parent rule: 603.12 A resolving spell or ability may allow or instruct a player…
603.12a Normally, if the trigger event or events occur multiple times during the resolution of the spell or ability that created it, the reflexive triggered ability will trigger once for each of those times. However, if a resolving spell or ability includes a choice to pay a cost multiple times and creates a triggered ability that triggers when that payment is made, paying that cost one or more times causes the reflexive triggered ability to trigger only once.
No sub-rules.