Tetsuya, Twin-Fang Shogun

When Tetsuya, Twin-Fang Shogun enters the battlefield, create Demonsbane, a Legendary
White Equipment Artifact with "Equipped
creature gets +1/+0 and has Double Strike," and
equip {2}. Then create, Muramasa, The Demons-
blade, a Legendary Black Equipment Artifact
with "Equipped creature gets +4/+0 and when equipped creature dies, return it to the battlefield
at the beginning of the next upkeep," and equip {5}.
"I grant a swift death."