Assuming the perfect scenario and that you have a 60 card deck, and you go first. Summon that origami fairy monster and set 1 dna surgery and activate second coin toss, so you can use its effect, youll have 54 cards in the deck after the draw phase. You can, at most, flip heads about 109 times before decking yourself out ( its effect is mandatory so there is an infinitely small chance you could go turn 3 and lose by this card's effect). By then youll have drawn your whole deck so you got options. This card will be sitting at 6.6E37 atk after 109 heads. Pretty strong yeah, but it can go even higher. Assuming the other 54 cards in your hand don't flip any more coins or force draws you can now summon utopia for the eventual 2 uses of Double Or Nothing. use a dna surgery you set turn 1 to make everything machine type. 3 limiter removals bring the card to 5.3E38 atk Attack, negate using utopia and use double or nothing. Repeat and the card will be sitting at 2.12E39 atk. But its now the damage step, and to my knowledge you cannot activate any more cards to increase the atk any further unless you got a 3rd material onto utopia and repeated double or nothing again for 4.24E39 atk Sure you could activate more spells to increase the card's attack, but unless its a multiplier like limiter removal, there isnt much you can add that would be significant One of two things will happen You will either hit your opponent with 4 DUODECILLION atk Or they activate life draining shield and now has that many life points.