Whenever you cast your first spell during each of your turns, exile the top card of target opponent's library and create a Treasure token. Then you may cast the exiled card without paying its mana cost if it's a spell with mana value less than the number of artifacts you control. If you don't cast it this way, you may cast it this turn.

, Exile an Elf card from your graveyard: This creature gets +3/+3 until end of turn.

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Reach
Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
At the beginning of combat on your turn, other creatures you control with power 4 or greater gain trample and haste until end of turn.

Cosmogoyf's power is equal to the number of cards you own in exile and its toughness is equal to that number plus 1.

Creatures you control get +1/+0 until end of turn.

When this Equipment enters, attach it to target creature you control.
Equipped creature gets +2/+0.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Look at the top two cards of your library. Manifest one of those cards, then put the other on the top or bottom of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

This land enters tapped.
When this land enters, you gain 1 life.
: Add or .

This land enters tapped unless a player has 13 or less life.
: Add or .

Vivid — This spell costs less to cast for each color among permanents you control.
Tap up to two target creatures. Put a stun counter on each of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Draw a card.

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Backup 1
Trample
Whenever this creature deals combat damage to a player or battle, look at that many cards from the top of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Destroy six target creatures.

When this creature dies, create a 2/1 black Cat creature token.

Exhaust — : Put two +1/+1 counters on this creature. (Activate each exhaust ability only once.)
Whenever you activate an exhaust ability, return this card from your graveyard to the battlefield.

Vigilance
When this creature enters, you take the initiative.

Target creature gets +2/+4 until end of turn.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Search your library for a Doctor card, reveal it, put it into your hand, then shuffle.
II — Create a Food token and a 1/1 white Human creature token with "Doctor spells you cast cost less to cast."
III — Create a token that's a copy of target creature, except it's a legendary Alien named Prisoner Zero.

Whenever you cast a spell with mana value 4 or greater, this creature gets +2/+0 and gains vigilance until end of turn.