Ordinary potions
Silver & Golden potions
Super potions
Combinations of potions
Three in a row - doesn't have any additional effects.
Four in a row - creates a linear potion which destroys its row or column.
L-shaped combination creates a cross potion which destroys all the potions in its column and row.
T-shaped combination creates a bomb potion which destroys all the potions around itself.
Five in a row - creates a super potion.
A combination of two super potions destroys all the elements on the field.