Prism of Curiosity

When Prism of Curiosity enters the battlefield,
choose one —
• Target creature can't be blocked this turn.
• Exile the top card of your library. Until end of
turn, you may play that card.
{t}: Add {c}{u} or {c}{r}
"This is but a small window into infinite ideas."
- Prism Crafter, Armeldius