Struggle Reaper

Corrupted Crystal: See it, buy it

Shelly: 2

Mrs. Struggles: 2-3, ideally 3

Miss Fortune: 2-3, 3 is really pushing inventory space

Glowing Crown: Need 1 for King Crown. 1 more is ideal

If go for more crowns, you may need a Mana Orb for timely activation

Toad: 2, be mindful of positioning with Miss Fortune

Oil Lamp: 1

Ruby Whelp and Holo Fire Lizard: give heat start. Need 1 of them, but both is okay. Whelp need more space but is preferred since it is an additional attacker. Can be skipped if heat skill or unique is offered

Do not make Ruby Chonk. It is a 6 space item that does not give any heat from its component right at the start, which is their purpose

Wolpertinger: 2 ideally if space allowed, but at least 1 is okay

Gem: yellow (until 100% stun resist) → red. keep purple only if money allowed AND free armor slot. sell all others

And lastly, Paradise Birb: Very important. This item counteract enemy's Cap of Discomfort very nicely. Also boost your item's healing. And of course, the default speed boost. Take extra caution on your bird positioning.