IRW Taseiv

The IRW Taseiv was a Romulan heavy warbird starship in service to the Tal Shiar in the early 25th century. 

History
In 2409, the Tal Shiar coerced the civilian scientists at Gasko Station to research Borg technology. The Taseiv was one of four Mogai-class warbirds outfitted with the technology. The Taseiv and its sister ships,, and  were destroyed by a Starfleet starship, and the critical Borg research was purged from Gasko Station's computer by the lead scientist. 

Alternate events
Taseiv was one four Mogai-class starships docked at Dimorus Station in the Dimorus system in 2409. When the station came under attack from a Starfleet vessel hunting down the Star Empire's Borg research, the crew attempted to quickly reactivate the ship while the prototype of a Borg-adapted Mogai, the, engaged the Starfleet ship. All Mogai-class warbirds in the system were subsequently destroyed by the victorious Starfleet ship.