Of course, you need to pay for that 12 power somewhere , which has inspired Legacy decks that play Phyrexian Dreadnought to cheat it in on turn 2 with a Stifle
Junk Connector X DARK Link 2 [ WarriorLinkEffect ] ATK 1700 DEF - 2 Effect Monsters (Warrior and/or Machine), including a Tuner Once per turn, during the Main or Battle Phase, you can (Quick Effect): Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using only materials this card points to
Just Shock and draw a card is decent, Pyrohelix plus the draw can be deeply unfair
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And yes, both are already fetching ridiculous prices