Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

When Minsc & Boo enters and at the beginning of your upkeep, you may create Boo, a legendary 1/1 red Hamster creature token with trample and haste.
+1: Put three +1/+1 counters on up to one target creature with trample or haste.
−2: Sacrifice a creature. When you do, Minsc & Boo deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards.
Minsc & Boo, Timeless Heroes can be your commander.

When this artifact enters, create a 1/1 white Spirit creature token with flying.
Whenever you create one or more creature tokens, put a story counter on this artifact.
, , Remove a story counter from this artifact: Draw a card.

Destroy target land and all other lands with the same name as that land.

Flying
At the beginning of each of your postcombat main phases, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)

( represents colorless mana.)
When this creature enters, target opponent reveals their hand. You choose a nonland card from it and exile that card.
When this creature leaves the battlefield, target opponent draws a card.

At the beginning of your upkeep, put a time counter on this enchantment.
Once each turn, you may pay rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on this enchantment.

First strike, deathtouch
Whenever Glissa Sunslayer deals combat damage to a player, choose one —
• You draw a card and lose 1 life.
• Destroy target enchantment.
• Remove up to three counters from target permanent.

If you control an Eldrazi Spawn, create three 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add ." Otherwise, create one of those tokens.

Whenever this creature deals combat damage to a creature, destroy that creature. It can't be regenerated.
Discard a card: This creature gains flying and protection from green and from white until end of turn.

, : Tap target creature and put a +1/+1 counter on it. Until end of turn, that creature gains ": Double the number of +1/+1 counters on this creature."

Enchant creature
Equip abilities you activate that target enchanted creature cost less to activate.
Aura spells you cast that target enchanted creature cost less to cast.
Enchanted creature gets +2/+2 for each Aura and Equipment attached to it.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip

: Add .
As this artifact enters, you may have it become a copy of any creature on the battlefield until end of turn, except it has haste.

At the beginning of combat on your turn, you may attach any number of Auras and Equipment you control to target permanent or player.
Partner (You can have two commanders if both have partner.)

You may play an additional land this turn.
Draw a card.

You may activate equip abilities any time you could cast an instant.

(: Add .)

You may sacrifice a nontoken blue creature rather than pay this spell's mana cost.
Counter target spell.

: Add .
Station (Tap another creature you control: Put charge counters equal to its power on this Spacecraft. Station only as a sorcery.)
20+ | : Add X mana of any one color, where X is the number of charge counters on The Eternity Elevator.