Spirit Bonds — ruling 1

You decide whether to pay {W} as the triggered ability resolves. You may only pay {W} and create a Spirit token once per nontoken creature.

Spirit Bonds — ruling 2

You can sacrifice any Spirit to activate the last ability, not just a Spirit token created by Spirit Bonds.

Spirit Bonds : règles, fonctionnement et interactions (MTG)

Spirit Bonds is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Whenever a nontoken creature you control enters, you may pay . If you do, create a 1/1 white Spirit creature token with flying. , Sacrifice a Spirit: Target non-Spirit creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

How it works : Spirit Bonds

Original English text — Wizards of the Coast / Scryfall

#1July 18, 2014· Wizards of the Coast
You decide whether to pay as the triggered ability resolves. You may only pay and create a Spirit token once per nontoken creature.
Card named in this ruling
Spirit
#2July 18, 2014· Wizards of the Coast
You can sacrifice any Spirit to activate the last ability, not just a Spirit token created by Spirit Bonds.
Card named in this ruling
Spirit