Merrik, Grimoire Sorcerer

When Merrik, Grimoire Sorcerer enters the
battlefield, you may put target instant or sorcery
card you own from exile into your library second
from the top.
Cryptic Mastery —{2}{u/r}{b}: Each opponent loses
3 life unless they discard a card. Draw a card for
each player who lost life this way. (Activate this
ability only if a nonland card you own was exiled this
turn and only once each turn.)