This move deals 30 damage for every card in your hand, so if you can show some restraint, this move can easily rack up 200+ damage every turn
Do you own a custom deck box, a custom playmat, or anything else customized
As a comparison, here are two other Ixalan Swamps
Considering you'll have been using them as Fusion Materials throughout the game, that shouldn't be a difficult cost to pay
On the contrary, they even serve as a pseudo-Fog in some moments, where the opponent will choose to attack or cast a Lightning Strike on it instead of you, while, in your hand, maybe have the proper removal for the type of permanent this Battle will become
Eldlich the Golden Lord X LIGHT Level 10 [ Zombie / Effect ] ATK 2500 DEF 2800 You can send this card and 1 Spell/Trap from your hand to the GY, then target 1 card on the field