Inscription of Abundance

• WOTC Official Reminder Textofficial rules
  Fight — Each of those creatures deals damage equal to its power to the other.
• WOTC Official Reminder Textofficial rules
  Kicker — Kicker [cost] (You may pay an additional [cost] as you cast this spell.)

• WWizards of the Coast2020-09-25
  Official Ruling
  If the second mode is chosen and each creature the target player controls has negative power, that player doesn't gain or lose life.
• WWizards of the Coast2020-09-25
  Official Ruling
  If more than one mode is chosen, perform them in the order written. Nothing can happen in between, however, and no player may choose to take actions. Any abilities that trigger will be put onto the stack after the spell has finished resolving.
• WWizards of the Coast2020-09-25
  Official Ruling
  If either target creature is an illegal target as Inscription of Abundance resolves with its last mode chosen, no creature will deal or be dealt damage.
• WWizards of the Coast2020-09-25
  Official Ruling
  If you kick Inscription of Abundance, you can't choose any one mode more than once.
• WWizards of the Coast2020-09-25
  Official Ruling
  If any targets become illegal, the other targets will still be affected as appropriate.
• WWizards of the Coast2024-11-08
  Official Ruling
  If you copy a kicked spell on the stack, the copy is also kicked. If the copied spell is a permanent spell, the token the copy of that spell becomes when it enters is also kicked.
• WWizards of the Coast2024-11-08
  Official Ruling
  If a card or token enters as a copy of a permanent, the new permanent isn't kicked, even if the original was.
• WWizards of the Coast2024-11-08
  Official Ruling
  If a spell's kicker cost was paid, the spell is "kicked."
• WWizards of the Coast2024-11-08
  Official Ruling
  To determine a spell's total cost, start with the mana cost (or an alternative cost if another card's effect allows you to pay one instead), add any cost increases (such as kicker), then apply any cost reductions. The spell's mana value remains unchanged, no matter what the total cost to cast it was.
• WWizards of the Coast2024-11-08
  Official Ruling
  The kicker ability doesn't let you pay a kicker cost more than once.
• WWizards of the Coast2024-11-08
  Official Ruling
  If you put a permanent with a kicker ability onto the battlefield without casting it, you can't kick it.

Rulings via Scryfall