Urza’s Tower

: Add . If you control an Urza’s Mine and an Urza’s Power-Plant, add instead.

Ashnod’s Battle Gear

You may choose not to untap Ashnod’s Battle Gear during your untap step.
, : Target creature you control gets +2/-2 for as long as Ashnod’s Battle Gear remains tapped.

Eye for an Eye

The next time a source of your choice would deal damage to you this turn, instead that source deals that much damage to you and Eye for an Eye deals that much damage to that source’s controller.

Library of Alexandria

: Add .
: Draw a card. Activate this ability only if you have exactly seven cards in hand.

Ali from Cairo

Damage that would reduce your life total to less than 1 reduces it to 1 instead.

Piety

Blocking creatures get +0/+3 until end of turn.

Piety

Blocking creatures get +0/+3 until end of turn.

Thoughtlace

Target spell or permanent becomes blue. (Mana symbols on that permanent remain unchanged.)

Sleight of Mind

Change the text of target spell or permanent by replacing all instances of one color word with another. (For example, you may change “target black spell” to “target blue spell.” This effect lasts indefinitely.)

Crusade

White creatures get +1/+1.

Burrowing

Enchant creature
Enchanted creature has mountainwalk. (It can’t be blocked as long as defending player controls a Mountain.)

Fastbond

You may play any number of lands on each of your turns.
Whenever you play a land, if it wasn’t the first land you played this turn, Fastbond deals 1 damage to you.

Fear

Enchant creature (Target a creature as you cast this. This card enters the battlefield attached to that creature.)
Enchanted creature has fear. (It can’t be blocked except by artifact creatures and/or black creatures.)

Howling Mine

At the beginning of each player’s draw step, if Howling Mine is untapped, that player draws an additional card.