terraria accessory crafting tree is melting my brain

Split it into the two final pieces and stop thinking of it as one tree. Terraspark is Frostspark Boots + Lava Waders. Frostspark is Lightning Boots + Ice Skates, and Lightning Boots are Spectre Boots (Hermes-type boots + Rocket Boots) plus an Aglet and Anklet of the Wind. Lava Waders come from Water Walking Boots + Obsidian Skull, then that + Lava Charm. Ankh Shield is Obsidian Shield + Ankh Charm. Both need an Obsidian Skull, so make two. If you lose track, hand an accessory to the Guide and he shows what it goes into.