Crimson Augment: Targets who are linked Via your Pact blade have a percentage their healthregen shared with you.
Percentage: 75% / 100% / 125% / 150% / 175%
Active: You throw your PactBlade outwards this links to the first champion it hits, enemy or allied. Hitting Allied champions links you with them and you both gain a percentage of eachothers healthregen (doesnt stack with itself). Enemies hit with this are slowed by 40% and have damage dealt to them over 3 seconds, they are also linked for 3 seconds too, your passive is disabled while you have someone linked, linking to allied champs also disable auto attack useage but grants a 40% move speed boost to both of you, linking to enemies extends your auto attack range to the range of your linkage. (you're still melee m8 soz)
Active: This can only be activated while you have an enemy linked, and therefore has no acutal cooldown. Your PactBlade no longer psychically tethers to your target anymore, and now you strike into them dealing physical damage and increasing the link duration by a further 3 seconds, however this completely disables your auto attacks, and passive effect.
Calling apon ancient power, you sacrifice yourself to the Eldritch overlords, causing you to die after a set amount of time, this death will be considered an execute always even if you are damage, however if you are killed before its a regular kill, (but gl killing him here :P) you gain huge boosts to your AD and MoveSpeed, getting kills and assists extend the duration of this by 5 seconds. A global screech can be heard when casting this ult, and enemies within 1300 range of you are notified of your presence, (same as rengar ult but slightly different) Also the death caused by this will never put you on a deathtimer above 30 seconds.