Menace
Creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Whenever a creature an opponent controls dies, if its toughness was less than 1, draw a card.

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As this land enters, you may pay 2 life. If you don't, it enters tapped.

Counter target spell.

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
: Skithiryx gains haste until end of turn.
: Regenerate Skithiryx.

, : You may put a creature card from your hand onto the battlefield.

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

End the Festivities deals 1 damage to each opponent and each creature and planeswalker they control.

Indestructible
As long as your devotion to black and red is less than seven, Mogis isn't a creature.
At the beginning of each opponent's upkeep, Mogis deals 2 damage to that player unless they sacrifice a creature of their choice.

Flying, lifelink
Whenever Aclazotz attacks, each opponent discards a card. For each opponent who can't, you draw a card.
Whenever an opponent discards a land card, create a 1/1 black Bat creature token with flying.
When Aclazotz dies, return it to the battlefield tapped and transformed under its owner's control.

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As this land enters, you may pay 2 life. If you don't, it enters tapped.

Red spells you cast cost less to cast.
Creatures you control have haste.
, : Create a token that's a copy of target creature you control. Sacrifice it at the beginning of the next end step.

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Take an extra turn after this one. Exile Temporal Trespass.

Equipped creature gets +10/+10 and loses flying.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

+2: Create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
+1: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3.
−5: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.

Instant and sorcery spells you cast cost less to cast.
Whenever you cast an instant or sorcery spell during your turn, flip a coin. If you lose the flip, Ral deals 1 damage to you. If you win the flip, you may exile Ral. If you do, return him to the battlefield transformed under his owner's control.

Target player gains X life.

Menace
Paradox — Whenever you cast a spell from anywhere other than your hand, this creature deals 3 damage to any target. Then put a +1/+1 counter on this creature.
When this creature dies, it deals damage equal to its power to each opponent.

When this artifact enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")
, , Sacrifice this artifact: Return up to two target creature cards from your graveyard to your hand.

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.)

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This land enters tapped.
When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)