Sephirothmon (BT12-065 U) [Across Time]

Product Details

[Digivolve: 1 from [Mercurymon]]
You may digivolve this card from your hand onto one of your black Tamers as if the Tamer is a level 3 black Digimon.
[When Digivolving] Until the end of your opponent's turn, 1 of your opponent's Digimon gains "[Start of Your Main Phase] This Digimon attacks."