Tier 1~150: Armored Sea Otter Egg, Glittering Rune Stone, S7 Season Reward Avatar Frame Lv.3, S7 Season Reward Background Board Lv.3. Tier 151-300: Charging Sea Otter Egg, Glittering Rune Stone, S7 Season Reward Avatar Frame Lv.2, S7 Season Reward Background Board Lv.2. Tier 301-600 Claw Sea Otter Egg, Glittering Rune Stone, S7 Season Reward Avatar Frame Lv.1, S7 Season Reward Background Board Lv.1