Fix crashing issues

src/modifier/modifier-type.ts

@@ -760,6 +760,7 @@ const enemyModifierPool = {
     new WeightedModifierType(modifierTypes.BASE_STAT_BOOSTER, 1)
   ].map(m => { m.setTier(ModifierTier.GREAT); return m; }),
   [ModifierTier.ULTRA]: [
+    new WeightedModifierType(modifierTypes.REVIVER_SEED, 2),
     new WeightedModifierType(modifierTypes.ATTACK_TYPE_BOOSTER, 10),
     new WeightedModifierType(modifierTypes.FOCUS_BAND, 2),
     new WeightedModifierType(modifierTypes.LUCKY_EGG, 4),

src/modifier/modifier.ts

@@ -682,7 +682,8 @@ export class PokemonInstantReviveModifier extends PokemonHeldItemModifier {
   apply(args: any[]): boolean {
     const pokemon = args[0] as Pokemon;
 
-    pokemon.scene.unshiftPhase(new PokemonHealPhase(pokemon.scene, pokemon.getBattlerIndex(), Math.max(Math.floor(pokemon.getMaxHp() / 2)), getPokemonMessage(pokemon, ` was revived\nby its ${this.type.name}!`), false));
+    pokemon.scene.unshiftPhase(new PokemonHealPhase(pokemon.scene, pokemon.getBattlerIndex(),
+      Math.max(Math.floor(pokemon.getMaxHp() / 2), 1),getPokemonMessage(pokemon, ` was revived\nby its ${this.type.name}!`), false, false, true));
 
     return true;
   }