Circuit Painter

WARNING: it will destroy anything it drives over, never use it near things you love.

how to use: use /summon minecraft:birch_boat {Tags:["paint"]} to summon a boat, it will place blue ice blocks under it and air blocks over it so it can tear through other blocks.

if you want to change the size or the ice type, just change these values:

run fill ~3 ~-1 ~3 ~-3 ~-1 ~-3 minecraft:blue_ice