EMBERCLEAVE ( THRONE OF ELDRAINE ) THRONE OF ELDRAINE ) Defining its era of Standard as few cards ever do, Embercleave is also the definitive choice for #1 double strike card and as such a lock for the upper end of this list
Despite this, the archetype did have an incredible generic synchro monster that rewarded players for strategically planning the materials that they used to summon it, as Metaphys Horus is an amazingly intricate card
That alone would make it playable
Obviously its not really worth spending two mana and a card to turn your worst creature into the best creature on the battlefield, but what about a spell that can either do that or turn your opponents best creature into the worst creature on the battlefield
Black Salvo X DARK Level 3 [ Machine / TunerEffect ] ATK 100 DEF 1100 When this card is Normal Summoned: You can target 1 Level 4 DARK Machine-Type monster in your Graveyard
If a monster(s) leaves the field by your Normal Trap effect, while this card is in your GY (except during the Damage Step): You can Special Summon this card