You may pay rather than pay the mana cost for Zombie creature spells you cast.

Destroy target land.
Draw a card.

Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

Arixmethes enters tapped with five slumber counters on it.
As long as Arixmethes has a slumber counter on it, it's a land. (It's not a creature.)
Whenever you cast a spell, you may remove a slumber counter from Arixmethes.
: Add .

Destroy all creatures. They can't be regenerated. For each creature destroyed this way, its controller creates a 1/1 white Spirit creature token with flying.

: Add .
: Add or . This artifact deals 1 damage to you.

Shivan Meteor deals 13 damage to target creature.
Suspend 2— (Rather than cast this card from your hand, you may pay and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

(: Add .)

Until end of turn, creatures you control gain trample and get +X/+X, where X is the greatest power among creatures you control.

(: Add or .)
This land enters tapped.
Cycling (, Discard this card: Draw a card.)

Flying
Whenever you gain life, put a +1/+1 counter on this creature.
Whenever you put one or more +1/+1 counters on this creature, draw a card. This ability triggers only once each turn.

: Each player may draw a card, then each player who drew a card this way gains 1 life.

: Add .
, : Target creature can't be blocked this turn.

Creeping Chill deals 3 damage to each opponent and you gain 3 life.
When Creeping Chill is put into your graveyard from your library, you may exile it. If you do, Creeping Chill deals 3 damage to each opponent and you gain 3 life.

Create X 2/2 white Soldier creature tokens with vigilance. If X is 10 or more, also create X 4/4 white Angel creature tokens with flying and vigilance.

, : Any number of target players each mill two cards. (Each of them puts the top two cards of their library into their graveyard.)
Exhaust — , : Any number of target players each mill cards equal to the number of cards in their graveyard. (Activate each exhaust ability only once.)

Menace
Ward—Pay 3 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 3 life.)
Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life."

Whenever an opponent taps an artifact for mana, gain control of that artifact until the end of your next turn.

As this creature enters, choose a creature type.
This creature is the chosen type in addition to its other types.
Each other creature you control of the chosen type enters with an additional +1/+1 counter on it.

Counter target spell unless its controller pays .