Equipped creature gets +2/+2.
As long as equipped creature is legendary, it has hexproof. (It can't be the target of spells or abilities your opponents control.)
Equip

Return all artifact and enchantment cards from your graveyard to the battlefield.

Destroy target land. Star of Extinction deals 20 damage to each creature and each planeswalker.

Polukranos enters with six +1/+1 counters on it. It escapes with twelve +1/+1 counters on it instead.
If damage would be dealt to Polukranos while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it.
: Polukranos fights another target creature.
Escape—, Exile six other cards from your graveyard.

: Change this creature's base power to target creature's power. (This effect lasts indefinitely.)

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and no matter when it came under your control.)
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flying
Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying.
Sacrifice a Spirit: Add .

(: Add .)

Choose one —
• Destroy all creatures.
• Destroy all artifacts and enchantments.

When The Sackville-Bagginses enter, you may sacrifice another creature or artifact. If you do, draw a card and create a Treasure token.
Whenever you sacrifice a token, target opponent loses 1 life.

(: Add .)

At the beginning of combat on your turn, choose one —
• Cloak a card from your hand. (Put it onto the battlefield face down as a 2/2 creature with ward . Turn it face up any time for its mana cost if it's a creature card.)
• Put a +1/+1 counter on each colorless creature you control.

(: Add .)

Destroy target creature or enchantment. You lose 2 life.

When this creature enters, each player sacrifices a creature of their choice.

(: Add .)

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)
I — Target opponent reveals their hand. You choose a creature or planeswalker card from it. That player discards that card.
II — Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.
III — Put target creature card from a graveyard onto the battlefield under your control.

: Add . When you spend this mana to cast a Dragon creature spell, it enters with an additional +1/+1 counter on it and gains hexproof until your next turn. (It can't be the target of spells or abilities your opponents control.)

Flying
When this creature enters, you may mill four cards. (You may put the top four cards of your library into your graveyard.)
When this creature dies, you may exile this card. When you do, return target creature card from your graveyard to your hand.

You have no maximum hand size.
: Add .