Click a blank space in the SD card's window, then press Ctrl + V to paste in the ROM
However, the Special Summoned monsters cannot activate their effects this turn, so either aim for a Rank 4 Xyz Summon, OR, because you can activate their effects during the next turn, you could choose to go with a strategy of *not* Xyz Summoning
Reducing the Risk of Dead Cards On the other hand, you can also earn virtual card advantage by avoiding dead cards or finding a use for cards that might otherwise be dead
Final Death is tempo-positive against Ancient Brontodon but not Baneslayer Angel
The black-red one, Sword of Sinew and Steel , is worth $60
Also, since your own army is also involved, there are situations where it is difficult to use depending on the situation