While the Imps may look tempting, the truth is that Young Pyromancers get much worse when they cost 5
On top of its already overpowered 5000 DEF, it can also not be destroyed in battle by Dark, Earth, Water, Fire, or Wind monsters
Call Forth the Tempest and Ezuri's Predation are both big-swing sorceries that can win games all on their own, especially if you manage to cast them early enough
Ancestral Vision | Illustration by John Avon 341 cards
Rayquaza ex has insane damage output, and while you can't predict where its hits will land, that makes it impossible for your opponent to prepare too
For Base Set, the actual sequence length could be as low as 3 (1 holo in every third pack, though it probably isnt as that would mean all the holos would be in packs with the same pack art), however I am going to be using a sequence length 216 packs (1 case of 6 booster boxes with 36 packs each) for all (or at least most) sets from generation 1 to generation 5, as the lowest insertion rate I found for this era was 1 per case