Defender Moti was forced to take the gloves when regular keeper Vladislav Stoyanov was sent off two minutes from the end of extra-time in their qualifier against Steaua Bucharest.
And after scoring Ludogorets' first penalty in the shoot-out, he then saved from Paul Pirvulescu and Cornel Rapa to send his side through to a first group stage appearance.
Wanderson had earlier taken the game to extra-time, levelling the tie at 1-1 with the only goal of the night, a 90th-minute volley.
Elsewhere, Napoli's chances of a second successive trip to the group stage were ended by Athletic Bilbao, who won 3-1 for a 4-2 aggregate victory.
Marek Hamsik gave the visitors the lead in Bilbao, but two Aritz Aduriz goals and a third from Ibai Gomez - all in the space of 14 second-half minutes - saw Athletic qualify.
Bayer Leverkusen and Malmo also made it through to Thursday's draw with comfortable second-leg home wins.
Germany's Leverkusen beat FC Copenhagen 4-0 to win 7-2 on aggregate, while Malmo of Sweden won 3-0 on the night to eliminate Salzburg 4-2 on aggregate.