could flow slowly (4 blocks), cause "drowning" damage immediately upon touch (mimicking burning), and set nearby wooden structures on fire.
: In a puzzle-platformer context, players could use a "Phase Switch" button to instantly turn all lava into water and vice-versa, allowing them to cross previously impassable fire-pits or swim through former lava-falls. Lava/Water Switch Lava and water swap!
: Use a resource pack to swap only the visuals. Players might jump into what looks like a refreshing pool of water only to realize it's actually lava—or tentatively touch a "lava fall" to find it's safe water. Puzzle & Interaction Mechanics could flow slowly (4 blocks), cause "drowning" damage