A Standard League Chest contains 1 Reward. Below is the list of possible Items and their Drop Rates:
Paragon Activator (30 d.) - 0.01%
Eir's Celestial Wand - 0.01%
Dark Dwarf - 0.01%
Paragon Points (150) - 0.01%
2 Level 2-4 Crystals - 0.01%
2 Level 2 Crystals - 0.01%
Paragon Activator (30 d.) - 0.01%
Class III Key - 0.01%
Class II Key - 0.01%
2 Level 3 Crystals - 0.01%
Class I Key - 0.01%
Bestiary Unit Training Speed Boost +25% (8h.) - 0.02%
Paragon Points (100) - 0.02%
Paragon Activator (7 d.) - 0.02%
Gold (20000) - 0.02%
Iron (20000) - 0.02%
Paragon Activator (7 d.) - 0.02%
Occult Unit Training Speed Boost +25% (8h.) - 0.03%
Shadow Army (8 h.) - 0.03%
Paragon Points (75) - 0.03%
Class IV Key - 0.03%
Class I Key - 0.03%
Demon - 0.04%
1 Level 1 Crystal - 0.04%
Golem - 0.04%
Reaver - 0.04%
1 Level 1-3 Crystal - 0.04%
Eldritch Golem - 0.04%
2 Level 1 Crystals - 0.04%
Paragon Activator (7 d.) - 0.04%
Priestess - 0.05%
Paragon Points (40) - 0.05%
Great Lord - 0.05%
Eldritch Griffin - 0.05%
Dark Dragon - 0.05%
Dark Paladin - 0.06%
Dark Wyvern - 0.06%
Weor's Protection (8 h.) - 0.06%
Spirit Army (8 h.) - 0.06%
Class III Key - 0.07%
Weor's Protection (8 h.) - 0.07%
Dark Demon - 0.07%
Dark Golem - 0.07%
Dark Reaver - 0.08%
Dark Chimera - 0.09%
Succubus - 0.09%
Spy Protection (1 d.) - 0.09%
Gold (10000) - 0.09%
Spy Protection (1 d.) - 0.09%
Food (20000) - 0.09%
Class II Key - 0.09%
Iron (10000) - 0.10%
Uncommon Class I Chest - 0.10%
Paragon Activator (2 d.) - 0.12%
Dark Griffin - 0.14%
Paragon Activator (7 d.) - 0.14%
Iron (8000) - 0.14%
Gold (8000) - 0.14%
Paragon Activator (2 d.) - 0.15%
Grade II Orb - 0.15%
Dark Great Lord - 0.16%
Dark Nomad - 0.17%
Dark Barbarian - 0.17%
Dark Necromancer - 0.17%
Dark Warlock - 0.18%
Paragon Activator (2 d.) - 0.20%
Defense Enhancer +10% - 0.22%
Castle Defense +10% - 0.22%
Paragon Activator (2 d.) - 0.23%
Paragon Activator (2 d.) - 0.23%
Paragon Points (20) - 0.23%
Offense Enhancer +10% - 0.23%
Food consumption -25% (1 d.) - 0.23%
Mythical Class IV Chest - 0.24%
Uncommon Class III Chest - 0.28%
Universal Boost (15 h.) - 0.31%
Dark Pathfinder - 0.32%
Paladin - 0.33%
Dark Succubus - 0.36%
Eldritch Knight - 0.36%
Knight - 0.37%
Iron (5000) - 0.39%
Gold (5000) - 0.39%
Auto Unit Hider (4 h.) - 0.39%
League Quests Refresher - 0.39%
Hamlet Gatherer +25% - 0.39%
Food (10000) - 0.39%
Paragon Quests Refresher - 0.39%
Individual Quests Refresher - 0.39%
Battleground Hunt - 0.40%
Paragon Activator (1 d.) - 0.42%
Dark Archer - 0.44%
Dark Huntress - 0.45%
Dark Pikeman - 0.45%
Dark Silent One - 0.47%
Universal Boost (2 h.) - 0.47%
Dark Knight - 0.51%
Experience Points - 0.53%
Class I Key - 0.57%
Food (8000) - 0.57%
Basic Summoning Bond - 0.57%
Rare Class III Chest - 0.64%
Universal Boost (30 min) - 0.65%
Dark Undead Dragon - 0.69%
Archer - 0.71%
Huntress - 0.72%
Silent One - 0.73%
Reiter - 0.73%
Lost One - 0.74%
Eldritch Barbarian - 0.75%
Paragon Points (5) - 0.75%
Barbarian - 0.75%
Iron (2000) - 0.76%
Gold (2000) - 0.76%
Nomad - 0.76%
Pathfinder - 0.78%
Seeker - 0.80%
Pikeman - 0.80%
Food Production +25% (1 d.) - 0.83%
Gold Production +25% (1 d.) - 0.84%
Iron Production +25% (1 d.) - 0.86%
Universal Boost (15 min) - 0.87%
Iron (3000) - 0.89%
Gold (3000) - 0.89%
Grade I Orb - 1.07%
Universal Boost (10 min) - 1.13%
Mar'eth's Blessing (Daily) - 1.16%
Food (5000) - 1.16%
Wisdom Points - 1.26%
Skull Runes - 1.28%
Food (2000) - 1.31%
Gold (1000) - 1.35%
Iron (1000) - 1.35%
Universal Boost (5 min) - 1.53%
Paragon Activator (60 min) - 1.58%
Food (1000) - 1.65%
Universal Boost (3 min) - 1.67%
Gold (400) - 1.69%
Iron (400) - 1.71%
Paragon Points (1) - 1.72%
Food (400) - 1.72%
Paragon Activator (30 min) - 1.72%
Gold (300) - 1.74%
Iron (300) - 1.76%
Food (300) - 1.76%
Universal Boost (1 min) - 1.76%
Food (3000) - 1.98%
Dark Assassin - 2.31%
Instant Recall - 2.41%
Energy Recharge - 3.17%
Maranian Amulets - 4.09%
Maranian Amulets (1000) - 5.17%
Sketches (1) - 5.97%
Sapphires - 6.58%