Poison chalice

The Poison chalice is a cocktail obtained for free from Stankers, a dwarven miner near the Coal Trucks west of Seers' Village. Its effects are random but include:
 * Temporarily boost Crafting, Fletching, or Thieving by 1 level.
 * Temporarily boost combat ability (Attack, Strength, and Defence) by 4 or reduce it by 3.
 * Heal or damage the player: healing players up to 490 lifepoints or damaging them from 30 to 600.

Damage seems to be based on a percentage of the player's lifepoints, at two levels: 5% damage and 60%. It also seems that player with a high amount of life points have lower chances of being damaged by drinking from the poison chalice. The poison chalice also features in the Seers' Village Tasks, in which players complete an easy task by giving one to King Arthur.

The chalice is free to obtain but sells for a moderate price on the Grand Exchange, so players make money by collecting and selling poison chalices. It seems that poison chalices are in demand from players seeking the Crafting or Thieving boost. It is also possible for it to be used by players as a teleportation mechanism, free of runes. When it kills them, it sends them to their respawn location. This could be used similarly like nitroglycerin. It can be a potent item for those who use Dharok's set as it damages a lot (up to 600 Lp), but it is very risky as it may heal or lose too many life points. It may even be fatal as if you are using Dharok, you may be already at a low life points level and can kill you if you are not careful.

Effects
Stankers hands you a glass of strangely coloured liquid...
 * You drink the strange green liquid.


 * {|class="wikitable"

!Response !Effects
 * You feel a little better.
 * Attack, Strength, Defence go down by 1-4; Crafting up 1
 * It has a slight taste of apricot.
 * No change
 * You feel a little strange.
 * Attack, Strength, Defence down by 1, Crafting up by 1
 * It restores some life points.
 * Heals some lifepoints.
 * You feel a lot better.
 * Heals lifepoints. Thieving up by 1
 * Wow! That was amazing! You feel really invigorated.
 * Attack, Strength, Defence up by 4; Thieving up 0-1
 * That tasted a bit dodgy. You feel a bit ill.
 * Lifepoints down by 30-50 (5%); Attack, Strength, Defence down by 1-2
 * That tasted very dodgy. You feel very ill.
 * Lifepoints down by up to 600 (60%); Attack, Strength Defence down by 3-4
 * }
 * Attack, Strength, Defence up by 4; Thieving up 0-1
 * That tasted a bit dodgy. You feel a bit ill.
 * Lifepoints down by 30-50 (5%); Attack, Strength, Defence down by 1-2
 * That tasted very dodgy. You feel very ill.
 * Lifepoints down by up to 600 (60%); Attack, Strength Defence down by 3-4
 * }
 * Lifepoints down by up to 600 (60%); Attack, Strength Defence down by 3-4
 * }

Warning, it may hit up to 600.

Trivia

 * Despite it saying "Poison", it doesn't actually poison players.
 * On 3 March, an update allowed players to gather poison chalices without going through a tedious conversation, which lead to its price crashing.