What is Overwhelm (Spell) in Legends of Runeterra?

Legends of Runeterra has many card effects that are common enough that they get their own keyword - a word or two that immediately tells you how the card works. Let's take a look at the Overwhelm (Spell) keyword.

Inflicts damage beyond what would kill the target(s) to the enemy Nexus.

You might be surprised to learn that Overwhelm (Spell) functions almost exactly like regular Overwhelm, only it's...on a spell. They are technically different keywords because they need to be phrased differently (there is no "I" when it comes to a spell's text). Other than that, it's just Overwhelm.

Keywords that Work Great with Overwhelm (Spell)

Overwhelm (Spell) is, fittingly enough, a spell-only keyword, and as such doesn't really play with other keywords.

Playing Against Overwhelm (Spell) in Legends of Runeterra

The only existing example of Overwhelm on a spell comes with one that costs 0-Mana, so there's not much that can be done about it. Even if you exhausted your opponent of Mana and spell-Mana, they would still be able to cast Final Spark. Beyond that, try to field high-Health units so that the Final Spark cannot pierce through their defenses.

Example Legends of Runeterra Overwhelm (Spell) Cards

Lux is currently the only example of Overwhelm on a spell, with her Fleeting Final Spark cards. Blast a unit with overwhelming light, and the Nexus too!