User blog comment:RaijinSenshi19/Omni Lord Hierarchy Decklists - Part 5: The Setting Sun/@comment-25004901-20160308225923/@comment-25600444-20160309061733

@ArmorDragoWizardDrum

I can confirm it, as I have sent an Email to Bushi just to make sure.

Both Deathmodai's effect and Lifelink are Auto Abilities, so you choose which resolves first.

So, you call first with the main effect, then take the Lifelink.