Need a check before I have the card become a Dark Synchro Monster

[Nathanael D. Striker]

[center]Name: Imperial Machine Master
Attribute: DARK
Level 5
Type: Machine
Card Type: Dark Synchro / Effect
ATK: 2000
DEF: 1300
Lore: 1 non-Tuner monster - 1 Dark Tuner monster
In order to Special Summon this card, subtract the Level of a Dark Tuner monster from the Level of 1 other monster you control; the value must equal the Level of this card. Once per turn, during your Battle Phase, you can remove from play 1 Machine-Type monster to have 1 monster your opponent controls decrease its ATK equal to its Level x 100. When this card is used as a Synchro Material Monster, you can add 1 Dark Tuner monster from your Deck to your hand. Then shuffle your Deck.[/center]

Cnc Please.