Meat Shield

Strategy and Synergy
Since spells are consumed on use, it provides a very strong defensive option for Kunai decks, allowing you to amass a huge amount of  by just spamming your kunais into the enemy, damaging the enemy and getting protected at the same time. If you get, you can keep the cycle upon depleting your kunai reserves.

One may consider also picking up to preserve your Shield stacks gained from your kunais and  to always keep your kunai reserves ready to be used up.