I generally will allow write-ins but prefer those to be targeted at the same sort of macro-scale / personality-based / narrative-influenced decisions rather than trying to map out in excruciating details all the plays to make, and I absolutely reserve the right to veto write-in votes in duels in particular
Niv-Mizzet, Guildpact Niv-Mizzet, Guildpact is a flashy 5-color dragon avatar with hexproof from multicolored spells, so its tough to remove
If an opponent does not have a good counter for the card, it will only get stronger and stronger until it ultimately wipes out all opposition and wins the game
It's still better to reinforce than to send the same name card to his GY
Instead of paying mana, you can suddenly churn through your deck at lightning speed, which sets up combos or simply overwhelms your opponent with card advantage
UR Ultra Rare Galaxy Stealth Dragon X DARK Rank 4 [ DragonXyzEffect ] ATK 2000 DEF 1600 2 Level 4 Dragon monsters Once per turn: You can detach 1 material from this card