Bokti, Shunned Alchemist

{1}{r}: Sacrifice an artifact search your library for
a artifact with converted mana cost X or less,
where X is 1 plus the sacrificed artifact's converted mana cost.
{2}{u}{b}{t}, create a legendary 2/1 black Beast creature token named Iju with "When this creature attacks, draw a card for each artifact you control."
"Iju, fetch me my materials!"