diff --git a/src/data/mystery-encounters/mystery-encounter-utils.ts b/src/data/mystery-encounters/mystery-encounter-utils.ts
index 2d8d7bfbf66..00e6eb90040 100644
--- a/src/data/mystery-encounters/mystery-encounter-utils.ts
+++ b/src/data/mystery-encounters/mystery-encounter-utils.ts
@@ -1,4 +1,4 @@
-import i18next from "i18next";
+import i18next, { ParseKeys } from "i18next";
 import { BattleType } from "#app/battle";
 import BattleScene from "../../battle-scene";
 import PokemonSpecies, { getPokemonSpecies, speciesStarters } from "../pokemon-species";
@@ -179,7 +179,7 @@ function getTextWithDialogueTokens(scene: BattleScene, textKey: TemplateStringsA
     return null;
   }
 
-  let textString: string = i18next.t(textKey);
+  let textString: string = i18next.t(textKey as ParseKeys);
 
   // Apply dialogue tokens
   const dialogueTokens = scene.currentBattle?.mysteryEncounter?.dialogueTokens;
@@ -821,3 +821,52 @@ export function calculateMEAggregateStats(scene: BattleScene, baseSpawnWeight: n
 
   console.log(`Starting weight: ${baseSpawnWeight}\nAverage MEs per run: ${totalMean}\nStandard Deviation: ${totalStd}\nAvg Commons: ${commonMean}\nAvg Uncommons: ${uncommonMean}\nAvg Rares: ${rareMean}\nAvg Super Rares: ${superRareMean}`);
 }
+
+/**
+ * Handles applying hp changes to a player pokemon.
+ * Takes care of not going below `0`, above max-hp, adding `FNT` status correctly and updating the pokemon info.
+ * TODO: handle special cases like wonder-guard/ninjask
+ *
+ * @param pokemon the player pokemon to apply the hp change to
+ * @param damage the hp change amount. Positive for heal. Negative for damage
+ *
+ */
+function applyHpChangeToPokemon(pokemon: PlayerPokemon, value: number) {
+  const hpChange = Math.round(pokemon.hp + value);
+  const nextHp = Math.max(Math.min(hpChange, pokemon.getMaxHp()), 0);
+  if (nextHp === 0) {
+    koPlayerPokemon(pokemon);
+  } else {
+    pokemon.hp = nextHp;
+  }
+}
+
+/**
+ * Handles applying damage to a player pokemon
+ *
+ * @param pokemon the player pokemon to apply damage to
+ * @param damage the amount of damage to apply
+ * @see {@linkcode applyHpChangeToPokemon}
+ */
+export function applyDamageToPokemon(pokemon: PlayerPokemon, damage: number) {
+  if (damage <= 0) {
+    console.warn("Healing pokemon with `applyDamageToPokemon` is not recommended! Please use `applyHealToPokemon` instead.");
+  }
+
+  applyHpChangeToPokemon(pokemon, -damage);
+}
+
+/**
+ * Handles applying heal to a player pokemon
+ *
+ * @param pokemon the player pokemon to apply heal to
+ * @param heal the amount of heal to apply
+ * @see {@linkcode applyHpChangeToPokemon}
+ */
+export function applyHealToPokemon(pokemon: PlayerPokemon, heal: number) {
+  if (heal <= 0) {
+    console.warn("Damaging pokemong with `applyHealToPokemon` is not recommended! Please use `applyDamageToPokemon` instead.");
+  }
+
+  applyHpChangeToPokemon(pokemon, heal);
+}