1 blessing by 30%: this will reduce your equipment being lost to 7%, for a container it will be reduced to 70%.
2 blessings by 55%: 4.5% chance of dropping equipment, 45% chance of dropping a container
3 blessings by 75%: 2.5% chance to drop equipment, 25% chance of dropping a container
4 blessings by 90%: 1% chance to drop any piece of equipment, 10% to drop a container.
http://tibia.wikia.com/wiki/Blessing
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