Live by the Ichiji Die by the ichiji
Yup you can use it multiple times! Each don attached to a character or leader counts as 1 cost reduction, so using the 2c2k brook that attaches 2 don with his on play ability it would allow you to reduce a character by 2. Just has to be 7c or lower for his leader effect to proc.
Garp with Jack is such a fun combo, the gecko plays generally feel bad in it unless you want to use gecko for Rebecca + reduction, then it's not as bad. My favorite 10 don play was gecko > Becca > brook 2k, add 2 more don to leader and Jack to KO a 7c and swing 7k with lead
I've found this to work very well into them, they need to see like 2 or 3 jimbe/weevil combos in a row to keep up, Cavendish, carrot, kid and Doffy put in work
Try out the starve technique for Doffy, you can build up a big board and eventually follow into 8c kid and since their biggest body is a 6k body, they have to invest a lot of don to even touch him. Get a carrot out on top of kid and it's very to get them low in cards and have a killer snap back
I'm here Currently on a bonney post spam before I start posting Yamato and ace again lol