Auto-Shields

This card is a decent consideration for act one. It is very energy efficient and its downside is often negligible. The real problem with auto Shields is the increasing likelihood of picking up relics that provide incidental block at the start of a turn. Things like calipers, anchor, ornamental fan, and the abacus can prevent you from being able to get any block from this card. Furthermore, loop can trigger a Frost orb at the start of your turn and that two block completely negates also Shields. Needless to say this card also has an anti synergy with itself. For this reason I would not normally pick up more than one copy.