Long-Distance Shot works incredibly well with Suguri (46 Billion Years)'s passive as it hits anyone for 2 damage and allows her to roll 2 dice for movement so she can easily fight whoever she hit; all for just 10 stars. This card is a must bring on any deck for her, even the most gimmicky decks.
Cloud of Seagulls is Suguri (46 Billion Years)'s best escape card as she can use it as a free dash that has the chance of KOing her, which would allow her to keep all of her stars, or KO her pursuer which puts even further distance between her and the pursuer.
Indiscriminate Fire Support fulfills a similar role to Cloud of Seagulls, but its main difference is that it won't instantly KO 4 HP targets which allows Suguri (46 Billion Years) to make some risky offensive plays with it
Cards that boost Suguri (46 Billion Years)'s ATK like I'm on Fire! and Big Magnum gives her power outside of her out of damage cards, and makes finishing off low HP targets much more reliable.
Rbits boosts Suguri (46 Billion Years)'s subpar DEF, and it can't be used against her well since she mainly looks to get people to 1 HP with her out of combat damage cards.
Quick Restoration also can't defend against Suguri (46 Billion Years)'s out of combat damage cards, and it can allow her to stay at full HP for longer
Characters with high EVD like Suguri and Tsih have a pretty low chance of being KO'd at 1 HP by Suguri (46 Billion Years) unless she has a card to boost her ATK, or lower their EVD.
Characters with low EVD like Marc and Yuki (Dangerous) can bring Rainbow-Colored Circle to help them survive what would normally be near certain death from Suguri (46 Billion Years) fighting them at 1 HP, but she can also make good use out of it due to her 2 EVD.
Lucky Sevens will make Suguri (46 Billion Years) more vulnerable to everyone, except against 2+ ATK when she is at 2 or 1 HP, while making 0 EVD or lower characters more likely to evade her. It also syngergizes terribly with her passive since if any of the dice is a 0 after she boosts an out of combat damage card to norma, she will be unable to norma.