Searing Blow

Searing Blow is a unique 2-Energy Ironclad attack that can be upgraded an unlimited number of times. Each upgrade increases its damage: base 12, then 16, 22, 29, 37, and so on in increasing increments. This makes it the only card in the game that rewards repeatedly investing Smith visits — with four or five upgrades, Searing Blow becomes a massive burst damage card in the 30-50+ range.

The investment required is substantial: each Smith visit used on Searing Blow is one not used on your other cards. The strategy works best when you have abundant upgrade opportunities and don't need to spread upgrades across many cards. In runs with heavy Smiting access, Searing Blow can become a dominant win condition — but it requires commitment and planning.