PoE2
Controlled Destruction
Support
Critical, Spell
Tier: 1
Requires: Level 1
Support Reqirements: +5 Int
Supports Spells that Hit enemies, boosting their damage but preventing them from dealing Critical Hits
Supported Skills deal 40% more Spell Damage with Hits
Supported Skills cannot deal Critical Hits
Place into a Skill's Support Gem socket in the Skills menu to apply its effects to that Skill. You cannot have multiple copies of the same Support Gem socketed at the same time.
PoE1
Controlled Destruction Support
Spell
Critical, Support
Level: (1–20)
Cost & Reservation Multiplier: 140%
Requires: Level (18–70), (33–111) Int
Supports attack skills, or spell skills that deal damage.
Supported Skills have 80% less Critical Strike Chance
Supported Skills deal (25–39)% more Spell Damage

Additional Effects From Quality:
Supported Skills deal (0–10)% increased Spell Damage
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.