3 yugioh cards MISKD Yu-Gi-Oh!! Blue Eyes Ultimate Dragon!! Blue Eyes White Dragon's! All Rare 20 Card Lot!! : Toys & Games 5 Rares YuGiOh : ZTIN-EN019 Limited Ed

You can sneak it onto the battlefield with something likeTony Stark // The Invincible Iron Man, or double it up with the methods we described earlier for Iron Man, Bleeding Edge

Heres the full methodology: Why these weights

When this land enters, sacrifice it unless you tap an untapped artifact or land you control

After all, creatures have no memory of what they were before they were exiled

This isnt an unrestricted extra combat since you only untap two creatures, but its still very cheap, and Magic has plenty of creatures like Otharri, Suns' Glory or Eldrazi that are worth getting an extra swing with

Zekrom GX HR is limited to 100 copies and the SR version is limited to 1000 copies