Please don't downvote without reading.

Guys, I like doing math when it's related to games, for some strange reason.

Ult damage with 0 bonus AD at lvl 18 with full passive stacks.

300 (base) + 0.75 x 200 (from passive part 2)

450 damage.

Add in increase from passive stacks...

60% + 0.15 x 200% (scaling on bonus AD) = 60% + 30% Each stack.

5 stacks = 90% x 5 = 450% increase.

450 x 4.5 = 2025 True damage

Guys, this is with no items. No items.

No armor pen or anything needed, just purely from the kit, 2025 damage ult. Wiki is messed up - it says damage is increased by 20% in the text, but in damage values, it's counted by a bonus base amount. I've come to the conclusion clearly, that's not the actual damage of his ult, but it sure makes it look OP on the wiki.

Real damage.

300 (base) + 0.75 x 200 (from passive part 2) was right.

Assuming it's 60 + 15% of bonus AD by itself, that'd be:

5(60 + 30) = 450

900 base damage ult.

True damage.

Wow...

Assuming it's 20% bonus each stack.

450 + 450 x 0.2 x 5 = 900 Hey, it's the same!

Assuming it's both..

900 + 900 x 0.2 x 5 = 1800.

I hope it's not both.

(waiting for barrage of downvotes without comments)

Edit: Yep, 10 downvotes, only 4 comments (not by me).

Edit x2: Make that 11.