Sell all producers of the losing sibling. You need board space. Repack your grave (spawning pool) to produce only one type of minion.
(restart the event using a time machine or fresh run): sibling rivalry necromerger guide repack
Rivals are immune to knockback, but they are often susceptible to crowd control (CC) interruptions. Sell all producers of the losing sibling
: Keep your Anvils at Level 3 for the most efficient balance of musketeers and weapons. Avoid the Level 1 Anvil late game as it wastes Iron that could be used for higher-score targets. sibling rivalry necromerger guide repack
