No Mana regen, no CDR, Less gold gen, less AP, no bonus magic damage when procing the passive. Losing all this for 10 health and the option to have 5 AD instead. Also less XP
Relic shield got hit to but not as hard. Less Health, no health Regen on upgrade, no healing on minion kills. But its Passive has more charges early and the 3AD/5AP is more impactful then 10 health from spellthief's.
Supports first back is going to be so weak unless they double kill the other Bot
Back to season 3 ward bots again