Comet Collision (Yellow)

Deal 2 arcane damage to any target.

Starfall - If an instant card has been put into your graveyard this turn, instead deal 3 arcane damage.

When playing Comet Collision, you must declare a target. Whether or not an instant card has been put into your graveyard this turn for its Starfall ability is checked with Comet Collision resolves. If no instant cards have been put into the graveyard this turn, you will deal 3/2/1 arcane damage to the target. If an instant card has been put into the graveyard, you will deal 4/3/2 arcane damage to the target instead.

Starfall - If an instant has been put into your graveyard this turn, [EFFECT].

Starfall is a label keyword.
Starfall abilities in Omens of the Third Age are resolution abilities that are conditioned on whether or not an instant has been put into your graveyard this turn. Whether or not you meet the condition is checked when you begin to generate the effect, typically when the card begins to resolve.
Some Starfall abilities are targeted effects. If you play a card with a Starfall ability that generates a targeted effect, you must target the required object when playing the card regardless of whether a card with the instant type has been put into your graveyard this turn. Doing so will add the played card to the stack. Whether or not you meet the Starfall condition is checked when the card begins to resolve and you generate the Starfall effect. When the card resolves, if you meet the Starfall condition, you will generate the effect involving the targeted object.
When a card resolves on the stack, unless a rule or effect allows it to become a permanent in the arena or a defending card on the combat chain, it will clear the stack and be moved to graveyard once it is finished resolving. This will not cause the effect from the Starfall ability on that card to be retroactively generated if its condition wasn’t met before then.

Cost0

Defense3

Arcane2

SetsOMN