Bouncing Pay!

[Sleepy 211]

Bouncing Pay
[Normal Trap]
Gain LP equal to twice the total LP you paid to activate cards/effects from lower chain links in this chain, and if you do, you can have 1 monster on the field gain that much ATK. If you paid LP 2 or more times in the same chain, you can activate this card from your hand. You can only activate 1 "Bouncing Pay" per turn.

- - - -

My Body As a Shield, Green Baboon, Toon World, Cosmic Cyclone, stuff like that. I got the inspiration after watching a few Solemn Cards in duels recently, but I don't wanna make the card compatible with those counters ironically xD

Off the top of my head I calculate you'll at best, consistently pay something like 2000 to 2500 LP and drop this to regain 4000 to 5000 LP and power boost something.
 

[Summer Darj 292]

This can get really strong when going first with Destrudo, AHL and anything that pays half LP for a big boost of 4k ATK, although you would need a monster on the board to make the card live. There is Instant Fusion, too I can think of a handful of cards and decks that can make this more or less consistently live, such as Qliphort Scout, Evil Eyes and maybe Vampires, but IDK if the card is still too casual. You are going -1 in card advantage just to preserve LP and get a potentially big ATK boost, but it is situational at that, and the deck space could be used on more reliable cards such as combo pieces, board-breakers, disruption, etc.