Fail. Considering how incredibly rare it is to fully charge an Archangel, the upgrade to Seraph is worthless.

I don't understand why the sudden nerf to the archangel. A normal build for Karthus was 5 of those and a Rabbadon. Now it's impossible, and there's no item that could compensate that. ¿Why did you made the 3% unique?

At least you should have made the percentage bigger, since the damage it will have until it is fully completed will be lower than the original Archangel's one. All because it's mana is lower in all instances, I know it might be cheaper, but it's still weaker than a fully charged archangel even if we count that shield.

Singed op now!

I love the new changes! You guys are doing exactly what you should be doing. I'm a bit curious about the new tear: On mana-per-second toggled abilities like Singed's poots and Amumu's sadness, will the cooldown coming up right on the third tick cause the internal cooldown to start immediately, or wait til the next tick? It could easily be changed either way with a very slight delay in either direction.

You could build Seraphs embrace, start over and build muramana, and then build into archangel's staff. That's a max of 3000 mana, from these items, not 5000. You could then build whatever else floats your boat, but it's rather simple for Riot to make sure that this doesn't get out of hand on Ryze, since they've given themselves quite a few levers to deal with the issue. They could, most simply, just reduce his mana ratios.
Play Veigar with Deathcap, and you'll feel a bit better.

i dont like this too much

Effective HP would be incredibly low though, due to low armor/mr (at maximum, 100 on each I'd say). He would also have no magic penetration or cooldown reduction-- both crucial to Ryze. Building Seraph, maybe ROA (Buying tear+Catalyst is now viable, like Chalice+Catalyst is now if you're ahead). With Frozen heart, Banshee's Veil, Magic Pen. Boots, withk a situational item, will still be stronger than building 5 Seraph's Embrace. It would be viable as a "for fun" build, but would only REALLY be effective against bad players.

I m quite confused because jayce's r and ashe's e doesnt cost mana but they gain the stack although they dont normally use tears of goddess

Cap should have stayed at 1k for tear.