Sovereign Star Dragon, the Storm of Love Kiskil-Lilla. Named for the Sumerian incarnation of the night-storm demon Lilith, Kiskil-Lilla is an early game on-hit stride on the same level as Gablade and Grim Recruiter in other clans. Like those units, Kiskil-Lilla's primary role is to act as a high power pressure unit that baits opponents into dropping more guard to block her than her cardfighter would gain from her on-hit, but in the event that her attack does hit the setup it grants will greatly expedite the process of setting up killing moves like bringing out the Abhorrent One.
AUTO (Vanguard circle): When this unit's attack hits a vanguard, Soul Charge 2,
and if the number of cards in your soul is six or more, draw a card.
Counting the cards granted from her on-hit, to reach the six soul skill for Kiskil-Lilla's draw skill you'll generally need to soulcharge 2 beforehand. The easiest way to do this is with the House of Amon series, as in addition to the Hell's Draw, Deal and Nail soulcharge support they already have, in G-BT03 they've also received a new first vanguard "Amon's Follower, Barmaid Grace." When striding with Kiskil-Lilla you'll also receive the name of the unit in the heart, and by striding over either Astaroth or Amon himself you'll be able to use their skills to reach Grace's conditions. Using the Amon series also grants access to the trigger unit Amon's Follower Grausam, who when soulcharged can pay a cost of counterblast 1 to retire an opponent's unit. G-BT03 introducing on-soulcharge skills scales up the threat of Kiskil-Lilla immensely, as without any particular dedication on your part the opponent is now threatened by these skills giving you forms of advantage in addition to Kiskil-Lilla's draw. This incentivizes them to put down their hand guarding a high power center lane they should be ignoring, weakening their defenses for later on in the fight.
One should be careful not to make the mistake of trying to combo Kiskil-Lilla's soulcharge to Doreen the Thruster; because Doreen only benefits from main phase soul charges, and Kiskil-Lilla's on-hit takes place in the battle phase, it's impossible for Doreen to power up from the Storm of Love. Similar mistakes were common with No Life King Death Anchor several years ago, with many newer Irregulars cardfighters mistakenly believing they could put +15000 power on Doreen from Anchor's on-attack skill because it put five cards into the soul, and it would be easy to make the same mistake with Kiskil-Lilla's soulcharge 2.