Sardine's Alchemy

The mod adds several new potion effects, each with its own quirks, and it has room for more effects in later updates. A list of the added effects is kept in a spoiler section, so players who want to discover them unaided can skip it. Potions in the mod are brewed by the player, and none of the harmful effects can be applied to another player.

Toxin comes from Nightshade, a rare plant that spawns in the overworld and is most often seen in lush caves. A mob near an infected plant can contract Toxin, which is virulent and can wipe out a whole village. Shearing a Nightshade plant requires shears; any other tool lets it burst into a Toxin cloud that spreads across a surrounding area, and leaving it unharvested for several seconds triggers the same release. Brewing Potion of Poison II with Nightshade yields Potion of Toxin, and drinking milk removes the effect.

Tranquility works as a pacifier: most mobs stop attacking anyone under its effect, even hungry undead and the meanest hostiles, so a player can cross dark caves or a night without being snuck up on. A mob that is hurt or attacked while under the effect loses the fight, and the effect is removed at once when the player is hurt. Boss mobs are strong enough to resist it and attack as normal. Potion of Tranquility is brewed from Potion of Regeneration with cake and lasts 30 seconds. Aggression does the opposite, making the mobs it affects attack the creatures nearby.