Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health for 2 seconds. When either linked hero deals damage, both units are healed 50% of the damage dealt.
Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health for 2.5 seconds. When either linked hero deals damage, both units are healed 60% of the damage dealt.
Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health for 3 seconds. When either linked hero deals damage, both units are healed 70% of the damage dealt.
Now reads: Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health for 3 seconds. When either linked hero deals damage, both units are healed [50, 100, 150]% of the damage dealt.