Sphinx's Tutelage

Whenever you draw a card, target opponent mills two cards. If two nonland cards that share a color were milled this way, repeat this process.
{5}{U}: Draw a card, then discard a card.

Serum Visions

Scalpelexis

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever this creature deals combat damage to a player, that player exiles the top four cards of their library. If two or more of those cards have the same name, repeat this process.

Divine Presence

If a source would deal 4 or more damage to a permanent or player, that source deals 3 damage to that permanent or player instead.

Wall of Denial

Defender, flying
Shroud (This creature can't be the target of spells or abilities.)

Belltower Sphinx

Flying
Whenever a source deals damage to this creature, that source's controller mills that many cards.

Aqueous Form

Enchant creature
Enchanted creature can't be blocked.
Whenever enchanted creature attacks, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Guard Gomazoa

Defender, flying
Prevent all combat damage that would be dealt to this creature.

Inviolability

Enchant creature
Prevent all damage that would be dealt to enchanted creature.

Island

Elixir of Immortality

{2}, {T}: You gain 5 life. Shuffle this artifact and your graveyard into their owner's library.

Ambassador Laquatus

Wall of Glare

Defender (This creature can't attack.)
This creature can block any number of creatures.

Meekstone

Creatures with power 3 or greater don't untap during their controllers' untap steps.