How Many Heavy Storms Can You Have In Your Yugioh Deck?

Question

i have 3

Answer 1

Only 1 BUT u could use card such as Malevolent Catastrophe

which have same effect as heavy storm but only activated when your opponent attack.

Other cards to replace: Mystical Space Typhoon

Dust Tornado(i dont really this card honestly ,A DEAD DRAW CARD)

Answer 2

one. check out the format of yugioh.wikia.com - i dont know the official website

Answer 3

only one, here is the official banlist

http://entertainment.upperdeck.com/yugio...

Answer 4

1 heavy storm

1 mst

1 giant trunade

3 dust tornado