full house can be a good sjde deck card or not?

target 2 other face-up Spell/Trap Cards and 3 Set Spell/Trap Cards, on the field; destroy them.

well, because have too many supply unit and vanity emptiness...

Depends on the deck.

I side it in Fire Fist, Madolche, Tellars.

Just because there is vanity and supply doesn't mean its good.
Also this card doesn't have to be used on continuously spells/traps.
It can be used in chains.
E.G.
Cl 1 MST, Cl 2 Waboku, Cl 3 Full House.
It'll send MST and Waboku whilst destroying the 3 sets.

thank you for teach me so manything^^

I mean, like Tet said, its good in certain decks because they can get away with it. I could see it still being useful in certain stuff like mermails. I think its still meh, you could be using mal cat or chain whirlwind, theyre much easier to get off imho.

i just so happy if i can use 1 trap to destroy opponent's 5 backrow^^