Acridian

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Urza’s Armor

If a source would deal damage to you, prevent 1 of that damage.

Serra’s Liturgy

At the beginning of your upkeep, you may put a verse counter on Serra’s Liturgy.
, Sacrifice Serra’s Liturgy: Destroy up to X target artifacts and/or enchantments, where X is the number of verse counters on Serra’s Liturgy.

Morphling

: Untap Morphling.
: Morphling gains flying until end of turn.
: Morphling gains shroud until end of turn. (It can’t be the target of spells or abilities.)
: Morphling gets +1/-1 until end of turn.
: Morphling gets -1/+1 until end of turn.

Thrull Surgeon

, Sacrifice Thrull Surgeon: Look at target player’s hand and choose a card from it. That player discards that card. Activate this ability only any time you could cast a sorcery.

Foul Spirit

Flying
When Foul Spirit enters the battlefield, sacrifice a land.

Thrull Surgeon

, Sacrifice Thrull Surgeon: Look at target player’s hand and choose a card from it. That player discards that card. Activate this ability only any time you could cast a sorcery.

High Ground

Each creature you control can block an additional creature each combat.

Keeper of the Beasts

, : Choose target opponent who controlled more creatures than you did as you activated this ability. Create a 2/2 green Beast creature token.