[ stepping only close enough that his magic would reach—he still does not touch him, arm-and-a-half's length away, when he recites: ]

Let silver and steel be the essence.
Let stone and the archduke of contracts be the foundation.
Let rise a wall against the wind that shall fall.

Let the four cardinal gates close.
Let the three-forked road from the crown reaching unto the Kingdom rotate.
Let it be declared now; your flesh shall serve under me, and my fate shall be with your sword.

I shall attain all virtues of all of Heaven;
I shall have dominion over all evils of all of Hell.
And for you, who would be the incarnation of madness, I shall wield your chains.

[ as he speaks, his hand glows, inscription beginning to wrap around his wrist in a miasma-like, purple light; he presses his other hand to his elbow, as though to steady it, or send more power through it, and a magic circle appears at avenger's feet. idk if this is lore compliant but it's cool so whatever ]

Submit to the beckoning of the Holy Grail.
Answer, if you would submit to this will and this truth.
An oath shall be sworn here.