This article is a stub. You can help the Trimps Wiki by expanding it.
"This book explains methods of using a shield to actually block damage. The current shield will need to be completely destroyed and rebuilt, but it will give block instead of health."
It is obtained by completing The Block.
It cannot be activated unless the player's shield is Prestige 3 or higher. At that presige, it provides 58 block per soldier, compared to 621 health per soldier.
If the player had ever reached past zone 30 in their save, Shieldblock becomes marked among dangerous purchases.
If you're planning to do a deep run (that is, past zone 60) it is better to not obtain Shieldblock and instead get your block solely from Gyms.
Shieldblock has a reduced prestige scale (*5.69 per prestige level) compared to the regular shield (*11.4 per prestige level), and is outclassed by gymystic at higher levels, thus becoming comparatively useless as the player gets to higher levels. It can, however, be useful for the Crushed challenge or if you're current run is restricted to the lower zones.