Thinking of making a necro/ninja with:
ninja
hide
stealth
necro
spirit speak
fencing
poisoning
Primarily for PvM fel champ spawns, and hopefully to be able to defend or stealth away when raided. Anyone have something like this or know enough about the skills to give advice? Will this work without tactics? I have experience with necro, but not ninja.
Yeah, this sort of works, though I wouldn't bother with Poisoning, the main thing you would get from it is an auto-cure effect similar to Vamp Form/Petals. It isn't adding anything to your offense as you don't have Magery, and you're not playing as a PvP dexxer.
Wraith Form + Wither to level spawn, Mirror Images to divert melee, Fencing will allow you to Shadow Strike when raided and is providing melee defense but little else. Although you can Curse Weapon to heal from spawn (no tainted life leech on any Champ Spawn afaik) you're not going to be doing enough melee damage to heal from it without Tactics and some dexxer stats, which if you're playing a casting Necro might be a tall order, especially if you want 2/6 or 4/6. The problem comes from how you're going to kill the champ (and heal/cure to an extent), although it's perfectly possible to auto-defend bosses to death with Mirror Images (they're really that good) you ideally want to get it done as quick as if you hope to get out with the scrolls, Fencing is the lowest base damage of all the weapon skills in a like for like speed comparrison. In short - you need to find a way to get Tactics and Chiv on there - it should be possible with some skill items.
I'd suggest aiming for a minimum of:
100 Hiding
80 Stealth
100 Ninjitsu (ideally 120)
120 Fencing
90 Tactics
100 Necro
80 SS
70 Chiv
Which comes to 740, so you need 20 pts somewhere.
Though saying all this, for a Ninja I'd pretty much always go Gargoyle and use Throwing, or if you have the gear to make the suit work you could use Swords for the Talwar Whirlwind/Hit Area, or Mace if you want melee AI (for bigger leeches), you can then adjust the levels of how much you want to play it as a Necro with a weapon skill, or as a dexxer with some Necro spells (60 Necro).
Don't worry about Resist.
Know your Ninjitsu! - Your Ninjitsu skill directly equates to the chance of diverting attacks to Mirror Images, the success rate of getting into different forms, and the effectiveness of those forms, also be aware that Tiger Form from the Mastery has the chance to Evade.
Animal Forms you need to know:
Rabbit/Rat - +20 Stealth (handy if you're in stat loss and need to get your stuff back)
Cat/Dog (at 120 Ninjitsu) - 40 HPR (or 4 hp per second - you can add a further 18 on the suit if you have room)
Frog - you poison things that hit you
Serpent - you poison things you melee (every hit)
Wolf/Bake - +20 HP mount speed
Llama/Ostard - mount speed
Unicorn - mount speed low level poison immunity (blocks completely not auto-cure)
Ki-Rin - mount speed and 20 SR
With this build you can Death Strike, if an enemy moves 5 tiles they take 40ish damage, you can combo most Ninjitsu abilities with Necro.