It's not even that hard to understand if you take a moment to read their effects.
- Gain LP using LP healing cards
- Draw faster using Jasmine
- Rosemary to change opponent's battle position
- When your LP is high enough, ensure you have 3 monsters on the field, then on your next turn summon Ra, use its effect so it gains your LP as ATK, and attack with it.
If a face-up monster on Jesse's field is in defense position, leave it alone, when you gain LP for the last time just before summoning Ra, target it with Rosemary to turn it into attack position so that Ra can inflict damage by ramming it.