mark of the betrayer maybe?

You need team mates.

Reg = utility

Look at him as a support class, just like seddie, and queen.

He wont shine in one v one pew pew, but god is his burst support, and finishing abilty godlike, and dont forget his slows.

And ps, his dmg isnt weak, you just fought the best tank in game

Reg is a below average DG.  He has some utlity abilities that are nice and might justify using him in some larger games.  But in general, your team would be better served if it had no Regs on it.

A lot of players are under the strange impression that Reg is a really good DG.  Thats why you see all these "nerf Reg" threads.  But really I think that most good players have realized that he is actually pretty poor in general at most aspects of the game.  He is only really useful if people understand how to make use of his utility abilities, which are only really useful in large games.

Testing a Reg by just having a Sedna stand there is far from a "test".  And implying she's OP because of this test is just so wrong.  In a "real" game there are stuns, slows, cooldown slows, or the just plain O'l "Dog-pile on Sedna!" tactics that I get if I'm part of any battle.

A Sedna can health-stack, sure, but then she has little mana to heal, pounce, silence, and not enough speed to run away/towards anything.  Health-stacked Sedna is like Kirstie Alley on a Giant Cat; you may have a lot of trouble hurting her if you make that your only goal in the game, but if you just ignore her sometimes, and make her do anything that takes some endurance (mana), just watch her turn blue and clutch her chest.

Unless you only play 1v1 with Reg vs Sed games, and the Sed player is AFK a lot, I would'nt worry about it.

Yes, Regulus really needs a buff, first of all-speed, and than maybe damage. He has a nice opener (mines+mark) and a pretty viable finisher (snipe), but nothing between them. Also, using all this stuff is possible only at lvl10 at least and reqires tons of mana.

I dunno. Can u tell me why Regulus is one of the 4 DGs that lose more than win and still has high favor points in the end?

Top DGs

My guess: Snipe, Mines and range upgrade.

In games without a Torchbearer he can easily get most damage favor points with mines. Because of Snipe he can also easily get most kills favor points, which means he also usually gets kill streak favor points which means he also usually gets most gold favor points. He might also get most structures destroyed favor points because of his passive range skill. This might not help him in 1vs1, but the average favor point difference is quite significant.

On the other hand, 200 more losses than wins is statistically insignificant for almost 65000 games. It's more significant if the number of games played is low, like the 20000 games played with the QoT, her having 400 more losses than wins.

BTW, I agree with the point that regulus is a support DG. He can harass effectively too, but requires crit items in the late-game to make it effective. IMO there is a general problem in DG where it's hard to scale damage dealing as fast as you can scale damage mitigation and health. I think it buffing all damage dealing items would alleviate this problem.

As a person who plays Sedna primarily now, I can safely say that generally speaking Regulus is not what terrifies me, maybe in the early game because I tend to save for bishops instead of going for clerics immediately. 

Regulus is really not built to handle Sedna at all. Its possibly one of the worst match ups concievable.

High damage skills is not the same as DPS. I don't find his mines or snipe to be good DPS at all, but still great damage.

Whether someone is support/tank/whatever is just a matter of definition and arguably even subjective. Personally I find tank to be a supportive class, but a direct damage class can also be support depending on the nature of how the damage works - like snipe.

I guess if someone asked me for a definition, I'd say 'support' basically implied that the class is more useful in a synergy than they are by themselves, and I feel Sedna is often more useful as frontline assault than supportive healer.

By support, it means the the presence of reg helps allies somehow. Support = maim+scope+AoE. Reg can hang back while teammates are in the fray and provide damage and slowing enemies while not taking damage himself. He's also out of range of enemy AoE. He's artillery.

Short answer is your timing sucks...

I bet you are opening up with mine drop and aa and MoTB and wondering why you can't win?

You should be AA until you get here down a little bit say 50% then use mines like grenades and MOTB right after for the BOOM haha when she goes to heal..