Can Someone explain how new ER doesn't Break Ez, Corki, Jayce and GP?

Cause I can't figure how it won't

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** Essence Reaver New Recipe: [B.F. Sword + Caulfield’s Warhammer + 800 gold] Total Cost: 3200g Cooldown Reduction increased from 10% to 20% [Removed] No longer grants critical strike chance [Removed] No longer grants additional CDR based on critical strike chance. [Changed Effect] Mana refund reworked: Now grants 1% of missing mana on hit. [New Effect] UNIQUE Passive: For 8 seconds after your ultimate, gain 30% attack speed, and basic attacks refund 20% of your remaining non-ultimate cooldowns (30 second cooldown).