How to Attack a Base in Minecraft - Maximizing Damage

1. From the roof of the house, pour lava or water in. However, make sure to evacuate your troops!

2. Seal off entrances and exits with Obsidian once your troops are out.

3. Make Redstone traps, such as dart traps or spear traps, to kill owners in the base.

4. Use Silverfish. These little guys burrow in random blocks and hide until that block is destroyed. Once it is, they are released and are very hard to kill.
- This works extremely well with the obsidian trap method, because with all exits blocked, the owners will have to destroy blocks to get out.

5. Bring stuff to help you heal. This could be rabbit stew, potions, or any type of food item.