diff --git a/src/data/abilities/ability.ts b/src/data/abilities/ability.ts
index 199e0af3efb..b42b2ba07e7 100644
--- a/src/data/abilities/ability.ts
+++ b/src/data/abilities/ability.ts
@@ -7824,25 +7824,33 @@ export function initAbilities() {
     new Ability(AbilityId.TOXIC_CHAIN, 9)
       .attr(PostAttackApplyStatusEffectAbAttr, false, 30, StatusEffect.TOXIC),
     new Ability(AbilityId.EMBODY_ASPECT_TEAL, 9)
-      .attr(PostTeraFormChangeStatChangeAbAttr, [ Stat.SPD ], 1)
+      .attr(PostSummonStatStageChangeAbAttr, [ Stat.SPD ], 1, true) //Activiates on switch in when Terastallized
+      .attr(PostTeraFormChangeStatChangeAbAttr, [ Stat.SPD ], 1) //Activates mid round when Terastallized
       .uncopiable()
       .unreplaceable() // TODO is this true?
-      .attr(NoTransformAbilityAbAttr),
+      .attr(NoTransformAbilityAbAttr)
+      .condition(pokemon => pokemon.isTerastallized),
     new Ability(AbilityId.EMBODY_ASPECT_WELLSPRING, 9)
+      .attr(PostSummonStatStageChangeAbAttr, [ Stat.SPDEF ], 1, true)
       .attr(PostTeraFormChangeStatChangeAbAttr, [ Stat.SPDEF ], 1)
       .uncopiable()
       .unreplaceable()
-      .attr(NoTransformAbilityAbAttr),
+      .attr(NoTransformAbilityAbAttr)
+      .condition(pokemon => pokemon.isTerastallized),
     new Ability(AbilityId.EMBODY_ASPECT_HEARTHFLAME, 9)
+      .attr(PostSummonStatStageChangeAbAttr, [ Stat.ATK ], 1, true)
       .attr(PostTeraFormChangeStatChangeAbAttr, [ Stat.ATK ], 1)
       .uncopiable()
       .unreplaceable()
-      .attr(NoTransformAbilityAbAttr),
+      .attr(NoTransformAbilityAbAttr)
+      .condition(pokemon => pokemon.isTerastallized),
     new Ability(AbilityId.EMBODY_ASPECT_CORNERSTONE, 9)
+      .attr(PostSummonStatStageChangeAbAttr, [ Stat.SPD ], 1, true)
       .attr(PostTeraFormChangeStatChangeAbAttr, [ Stat.DEF ], 1)
       .uncopiable()
       .unreplaceable()
-      .attr(NoTransformAbilityAbAttr),
+      .attr(NoTransformAbilityAbAttr)
+      .condition(pokemon => pokemon.isTerastallized),
     new Ability(AbilityId.TERA_SHIFT, 9, 2)
       .attr(PostSummonFormChangeAbAttr, p => p.getFormKey() ? 0 : 1)
       .uncopiable()
diff --git a/test/abilities/embody-aspect.test.ts b/test/abilities/embody-aspect.test.ts
new file mode 100644
index 00000000000..43e4f9015dd
--- /dev/null
+++ b/test/abilities/embody-aspect.test.ts
@@ -0,0 +1,63 @@
+import { AbilityId } from "#enums/ability-id";
+import { MoveId } from "#enums/move-id";
+import { SpeciesId } from "#enums/species-id";
+import { Stat } from "#enums/stat";
+import { GameManager } from "#test/test-utils/game-manager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+
+describe("Ability - Embody Aspect", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  const teraForm = 4;
+  const baseForm = 0;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .moveset(MoveId.SPLASH)
+      .ability(AbilityId.EMBODY_ASPECT_TEAL)
+      .battleStyle("single")
+      .criticalHits(false)
+      .enemySpecies(SpeciesId.MAGIKARP)
+      .enemyMoveset(MoveId.SPLASH);
+  });
+
+  it("Embody Aspect should activate on switching in if user is terrestrialized", async () => {
+    await game.classicMode.startBattle([SpeciesId.OGERPON, SpeciesId.ABOMASNOW]);
+
+    const ogerpon = game.field.getPlayerPokemon();
+    expect(ogerpon.formIndex).toBe(baseForm);
+    expect(ogerpon.getStatStage(Stat.SPD)).toBe(0);
+
+    //Also terastallizes Ogerpon
+    game.move.selectWithTera(MoveId.SPLASH);
+
+    await game.phaseInterceptor.to("QuietFormChangePhase");
+    expect(ogerpon.formIndex).toBe(teraForm);
+    await game.toNextTurn();
+    expect(ogerpon.getStatStage(Stat.SPD)).toBe(1);
+
+    //Switch Ogerpon out
+    game.doSwitchPokemon(1);
+    await game.toNextTurn();
+
+    //Switch Ogerpon back in
+    game.doSwitchPokemon(1);
+    await game.toNextTurn();
+
+    //Ability activated
+    expect(ogerpon.getStatStage(Stat.SPD)).toBe(1);
+  });
+});