Gemini themselves fight apart using the pet system, One is coloured blue and is controlled normally, the other Red and is controlled by holding alt and right clicking. They are joined by a leash which changes colour from blue to red depending on how far apart they are, this leash is visible to you alone, not allies or enemies.
The Red will warp to the Blue when they become too far apart.
Their leash range is 400+(40*level)
They are considered to have the same health and mana bar, and benefit and suffer from the same buffs, debuffs and CC they receive.
If they are both hit by an AoE they effectively take double the damage (lowered to 144% damage taken by their passive ability)
Safety in numbers.
|(Innate): Allies affected by the same AoE as one of the twins (including the other twin) receive 15% less damage, this is multiplied to 30% if the other twin is also in the AoE.
|(Active): The twins dash to each other, meeting at the centre and dealing magic damage to enemies they collide with. As they meet they overtake each other and travel an extra distance away (this distance is capped at however far their dash was, i.e: they can not move further away from each other than they started), enemies hit by both twins are knocked up for 0.7 seconds.
Cost: 50 / 70 / 90 / 120 / 150 mana.
Damage per hit: 30 / 50 / 80 / 100 / 150 (+0.5 per ability power)
Extra distance: 30 / 50 / 80 / 140 / 200
|(Active): The twins fire a piercing skillshot towards target location, dealing magic damage to each target along the way. Enemies hit by both skillshots are silenced.
Cost: 80 / 90 / 100 / 110 / 120 Mana
Damage: 60 / 70 / 80 / 100 / 130 (+0.4 per ability power)
Silence: 1.5 / 2 / 3 / 4 / 5 seconds
|(Active): The red twin dashes to target location. Both twins receive a speed boost for 3 seconds.
Cost: 60 / 70 / 80 / 90 / 100 Mana
Speed increase: 25 / 30 / 35 / 40 / 50 %
|(Active): For a time, the tether between them becomes a solid beam of energy to enemies, incapable of being passed through by enemies without a dash or blink, allies can pass through it without hindrance. Enemies can be moved by the beam if it moves towards them however this does not interrupt any channels. Enemies pushed up against terrain by the beam will pass through the beam rather than the terrain, this will interrupt channels.
Additionally enemies standing within a certain range of the beam take magic damage every second.
Damage per second: 50 / 75 / 90 (+0.5 per ability power)
Duration: 4 / 5 / 6 seconds.