Dragon Pendant

can someone make my dragon deck stronger?

ok here’s my deck
monsters:
3 luster dragons
1 armed dragon lvl 10
3 armed dragon lvl 3
3 armed dragon lvl 5
2 armed dragon lvl 7
3 blizzard dragons
1 chthonian emperor dragon
3 element dragon
2 mirage dragons
1 twin headed behemoth
1 white-horned dragon

spells:
3 axe of despair
3 big bang shot
1 black pendant
2 malevolent nuzzler
1 spell absorption
1 [...]