Kalki is Vishnu's prophesied tenth avatara: at the yuga-juncture at Kali's end, born as Vishnuyasha's son (in the traditional village Shambhala), he ends the plunderer-kings and re-inaugurates the age of truth — the horse-mounted renewer.

The eleven Rudranis: Dhi, Vrtti, Ushana, Uma, Niyut, Sarpi, Ila, Ambika, Iravati, Sudha, Diksha.

At SB 3.12.13 these are explicitly called the wives of Rudra.

Shiva — knows tattva of — Krishna

Shiva knows Krishna's most secret glory: 'asyanubhavam bhagavan veda guhyatamam shivah' (SB 1.9.19). Evidence: EXPLICIT.

Shiva — gave weapon to — Arjuna

Shiva, astonished in battle, gave Arjuna His own weapon: 'bhagavan yudhi shulapanir vismapitah sagirijo 'stram adan nijam me' (SB 1.15.12), with Parvati beside Him. Direction: giver -> receiver. Evidence: EXPLICIT.

Designated Hara for the function of dissolution

In the one Purusha's bearing of maintenance-creation-dissolution the designation for dissolution is Hara: 'sthityadaye hari-virinci-hariti samjnah' (SB 1.2.23).