When Lord Xander enters, target opponent discards half the cards in their hand, rounded down.
Whenever Lord Xander attacks, defending player mills half their library, rounded down.
When Lord Xander dies, target opponent sacrifices half the nonland permanents they control of their choice, rounded down.

Whenever one or more modified creatures you control attack, untap all modified creatures you control. After this phase, there is an additional combat phase. This ability triggers only once each turn. (Equipment, Auras you control, and counters are modifications.)

Flying
This Vehicle enters with X +1/+1 counters on it.
Whenever this Vehicle enters or attacks, create a number of 1/1 white Soldier creature tokens equal to the number of +1/+1 counters on it.
Crew 2

Station (Tap another creature you control: Put charge counters equal to its power on this Spacecraft. Station only as a sorcery. It's an artifact creature at 8+.)
3+ | You may play an additional land on each of your turns.
8+ | Flying
Once during each of your turns, you may cast a permanent spell from your graveyard by sacrificing a land in addition to paying its other costs.

Constellation — Whenever an enchantment you control enters, put a +1/+1 counter on this creature and draw a card.

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

+1: Reveal the top four cards of your library. Put all land cards revealed this way into your hand and the rest into your graveyard.
0: Put any number of land cards from your hand onto the battlefield tapped.
−3: Create a green Treefolk creature token with reach and "This token's power and toughness are each equal to the number of lands you control."
−8: Return all permanent cards from your graveyard to your hand. You get an emblem with "You have no maximum hand size."

Whenever a player casts a spell, this enchantment deals 2 damage to that player.

, , Sacrifice this artifact: Add . Draw a card. (Activate only as an instant.)

Alluring Eyes — : Goad target creature an opponent controls. That player draws a card. You add . (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

This land enters tapped.
: Add .
: Add one mana of any color. Spend this mana only to cast artifact spells or activate abilities of artifacts.
Modular 1

: Add one mana of any color in your commander's color identity.

At the beginning of combat on your turn, creatures you control with toughness 4 or greater get +2/+2 and gain vigilance until end of turn.

At the beginning of your upkeep, if you control a creature with power 4 or greater, draw a card.

Players can't gain life.
Damage can't be prevented.
All damage is dealt as though its source had wither. (A source with wither deals damage to creatures in the form of -1/-1 counters.)

Horrors you control have menace.
Whenever a Horror you control deals combat damage to a player, that player mills that many cards.
At the beginning of your end step, choose target artifact or creature card in an opponent's graveyard that was put there from their library this turn. Put it onto the battlefield under your control.

Equipped creature gets +1/+1 for each land you control.
Equip legendary creature
Equip

, Remove a component counter from this artifact: Add two mana of different colors.
: Roll a d20.
1—9 | Put a component counter on this artifact.
10—20 | Put two component counters on this artifact.

Destroy all creatures. They can't be regenerated.

Fabricate 3 (When this creature enters, put three +1/+1 counters on it or create three 1/1 colorless Servo artifact creature tokens.)
Whenever an artifact you control is put into a graveyard from the battlefield, target opponent loses life equal to this creature's power.