Nonbasic lands are Mountains.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Flying
When Malfegor enters the battlefield, discard your hand. Each opponent sacrifices a creature for each card discarded this way.

Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell's converted mana cost.

Counter target spell unless its controller pays .

: Add .

Gain control of target creature until end of turn. Put a +1/+1 counter on it and untap it. That creature gains haste until end of turn. (It can attack and this turn.)

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Each creature you control with a +1/+1 counter on it has deathtouch.

: Add .
, , Sacrifice Mind Stone: Draw a card.

Whenever an opponent loses life, that player mills that many cards. (Damage dealt by sources without infect causes loss of life.)

, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

Defender
When Mnemonic Wall enters the battlefield, you may return target instant or sorcery card from your graveyard to your hand.

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Sacrifice Moonglove Extract: It deals 2 damage to any target.

When Nantuko Shaman enters the battlefield, if you control no tapped lands, draw a card.
Suspend 1— (Rather than cast this card from your hand, you may pay and exile it with a time counter on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)

Destroy target artifact or enchantment. Its controller gains 4 life.

Skip your draw step.
Whenever you discard a card, exile that card from your graveyard.
Pay 1 life: Exile the top card of your library face down. Put that card into your hand at the beginning of your next end step.

Reach (This creature can block creatures with flying.)
Whenever Netcaster Spider blocks a creature with flying, Netcaster Spider gets +2/+0 until end of turn.

All creatures get -1/-1.

: Add .
: Add . Activate this ability only if you control an Island.
: Add . Activate this ability only if you control a Plains.