Purist - Caster

Lich Bane post-ability gives 50% AS, converted by Slow and Steady to AD, then converted to AP via Adapt.

Ult has high AP scaling and deals magic damage.

Diana's post-cast empowered auto gives 105% AS, converted to 68 haste via Purist + Caster. With Nashor's + Lich Bane, permanent 220 haste enables infinite QE bursts. With that haste, QE combos are extremely fast and bursty.

Ethereal Weapon + Nashor's lets one ability proc the triple-ring.

Ezreal's passive at max stacks gives 50% attack speed, which Purist + Caster converts to 200+ ability haste. Q's hit-reduces-CD means Q has practically no cooldown late, and R refreshes in under 10s. Late, full-screen ult every 10 seconds = enormous pressure.

W activation gives 300 ability haste.

Power of long life — feel the thunder. If you don't get it with these, just trade $5.

Sylas's post-cast empowered auto carries 125% AS, converted by Purist + Caster to 81 haste. Pace your auto chain to keep passive stacks up and you maintain 200+ haste permanently. Don't burn through all passive stacks at once — keep haste high.

R deals % magic damage — level 3 base is 30%, +16% at 800 AP, and 3500 AP hits 100% max HP.

Ult build. R build.

Pillar emperor.

Convert attack speed to CDR.

Stack ult-CDR to the extreme. Not particularly strong, but extremely satisfying.

Stack CDR to the limit and spam pillars with main-E for max meme value.