1. Haemocrystals (Bleed to Explosive Damage)
Effect:

The Haemocrystals support gem transforms bleed effects into Path of Exile 2 Currency explosive damage. When an enemy is inflicted with a bleed, the Haemocrystals cause the bleed to turn into explosive Vaal crystals, dealing AoE (Area of Effect) damage when the bleed triggers.

Impact on Gameplay:

This support gem allows you to capitalize on damage-over-time effects like bleeds, but with a twist. Instead of simply waiting for the bleed to do its damage over time, the bleed now explodes on activation, dealing burst damage to nearby enemies.

It's perfect for players focusing on bleed builds or those who want to amplify their damage-over-time abilities with high burst potential. Combining this with other damage-enhancing skills can create a highly rewarding high-risk, high-reward playstyle.

2. Caltrops (Slowing Hazards)
Effect:

The Caltrops support gem introduces slowing hazards to the battlefield. When activated, it creates area-of-effect zones where enemies are slowed, making it harder for them to move and attack.

Impact on Gameplay:

This support gem provides crowd control, allowing you to control enemy movements, prevent them from escaping, or even delay their attacks. It’s perfect for slowing down fast enemies, creating opportunities to deal damage or escape when surrounded.

It opens up tactical play, allowing you to set traps in advance. For example, you can lure enemies into these slowing zones and then exploit their vulnerability with powerful AoE (Area of Effect) attacks. It works well in multitude of cheap POE 2 Currency combat styles, especially AoE damage dealers or mobility-focused builds.