Most important ones would be the Level 6-8 Synchros, and R4, R7, and R8s
What do you think bestow cards are missing
As for how I did in this assignment, I got away with bloody murder, I literally sent the rough draft for early submission so he can review it and give me feedback and I get this back I planned on going super in depth on every possible aspect of the card, from covering the probability of the opponent countering it with Ash Blossom & Joyous Springs, to the probability of you having PSY-framegear Gamma toncounter the counter
Plus, you may get a fun story of a more powerful card coming in off a Chaos Warp, so there is a bit of randomness thrown in for good measure
Super-Duper Death Ray deals 3 damage to that creature and the extra 1 damage can be dealt to its controller
The cEDH approach uses Rograkh as an easily-accessible piece of sac fodder for partner Tevesh Szat, Doom of Fools or a ritual like Culling the Weak