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However, Liliana should have discarded their entire hand already, so it's a pretty unlikely scenario that your opponent will have an answer

this turn, you cannot declare attacks, except with that monster, also its ATK/DEF become the combined original ATK of all Machine monsters you currently control whose ATK equals their own DEF

This card is also quite useful to be used in a deck, as its a strong card with 1900 attack and 1800 defense

However, this isnt to say you shouldnt spend any money

Gouki Headbatt X EARTH Level 2 [ Warrior / Effect ] ATK 800 DEF 0 If this card is in your hand: You can send 1 other "Gouki" monster from your hand to the GY, then target 1 "Gouki" monster you control

I personally play a copy in my Purphoros, God of the Forge deck, and Ive never been disappointed to use it