what i have
venomous victory 1 x 2
venomous victory 2 x 3
venomous victory 6 x 1
venomous victory 7 x 1
venomous victory 10 x 2
venomous victory 11 x 2
venomous victory 12 x 1
venomous victory 14 x 2
venomous victory 15 x 1
venomous victory 16 x 1

total pieces
16

pieces needed
3, 4, 5, 8, 9, 13

pieces to swap
venomous victory 1
venomous victory 2 (x2)
venomous victory 10 (x2)
venomous victory 11 (x2)
venomous victory 14 (x2)