Enchantment: Bloodrazor is Boring...
It's also NOT a good design change. Putting the Phantom Hit onto Guinsoo's arms Vayne for a two-hit Silver Bolt proc, top and mid Kayle for an unrivaled powerspike on a first item, and Kog'Ma to spike even harder. Please, Riot, please revert these changes. Devourer and Guinsoo's were never overpowered, it was just that certain champions' ratios were overtuned due to the scarcity of stats that benefitted them. Turn back some of those stats, and you'll see that these items are very fair.