Aven Windreader
{3}{U}{U}
Creature -- Bird Soldier Wizard
3/3
Flying (~this~ can't be blocked except by creatures with flying or reach.)
{1}{U}: Target player reveals the top card of their library.
Mirrored Depths
Plane -- Karsus
Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell.
Whenever chaos ensues, target player reveals the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.