Atchil, Agile Ascendant

Prowess, Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1}
or one mana of that creature’s color.)

You may look at the top card of your library any time.

{t}: Each player draws a card.

You may cast creature spells from the top of your library if they share a creature type with a tapped creature you control.