Add animation for Mighty Cleave (#2295)

* Mighty Cleave animation first draft

* Give the slash a big streak

play.pokemonshowdown.com/src/battle-animations-moves.ts

@@ -36393,6 +36393,81 @@ export const BattleMoveAnims: AnimTable = {
 			}, 'linear', 'fade', {filter: 'hue-rotate(180deg)'});
 		},
 	},
+	mightycleave: {
+		anim(scene, [attacker, defender]) {
+			scene.showEffect('sword', {
+				x: attacker.leftof(-10),
+				y: attacker.y - 10,
+				z: attacker.z,
+				scale: 0.5,
+				opacity: 1,
+			}, {
+				y: attacker.y + 10,
+				scale: 1,
+				opacity: 0.4,
+				time: 300,
+			}, 'decel', 'fade');
+			attacker.delay(300);
+			attacker.anim({
+				x: defender.x,
+				y: defender.y,
+				z: defender.behind(70),
+				time: 300,
+				opacity: 0.5,
+			}, 'accel');
+			attacker.anim({
+				x: defender.x,
+				y: defender.x,
+				z: defender.behind(100),
+				opacity: 0,
+				time: 100,
+			}, 'linear');
+			attacker.anim({
+				x: attacker.x,
+				y: attacker.y,
+				z: attacker.behind(70),
+				opacity: 0,
+				time: 1,
+			}, 'linear');
+			attacker.anim({
+				opacity: 1,
+				time: 500,
+			}, 'decel');
+			scene.showEffect('iceball', {
+				x: defender.x,
+				y: defender.y,
+				z: defender.z,
+				time: 500,
+				xscale: 1.2,
+				yscale: 0.4,
+				opacity: 0.8,
+			}, {
+				time: 760,
+				xscale: 1.4,
+				yscale: 0.6,
+				opacity: 0.4,
+			}, 'accel', 'explode', {filter: 'hue-rotate(180deg)', rotate: '-45deg'});
+			scene.showEffect('rightslash', {
+				x: defender.x,
+				y: defender.y,
+				z: defender.z,
+				scale: 1.5,
+				time: 500,
+			}, {
+				scale: 2,
+				opacity: 0,
+				time: 760,
+			}, 'accel', 'fade');
+			defender.delay(760);
+			defender.anim({
+				z: defender.behind(30),
+				time: 100,
+			}, 'swing');
+			defender.anim({
+				time: 300,
+			}, 'swing');
+		},
+	},
 };
 
 // placeholder animations