Zeng, The Calm Torrent

During your opponents turn, creature spells you control gain flash. Whenever drawing a card
triggers a level up, it triggers a level up twice.
Whenever a creature enters battle during your opponent's turn, draw a card. Whenever
any creature levels up, look at the top 2 cards
of your library, put an instant or sorcery in
your hand and the other in the bottom of your
library.