Flying, lifelink
Spells you cast have delve. (Each card you exile from your graveyard while casting those spells pays for .)
Whenever you cast a spell, you lose life equal to its mana value.

Draw a card.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creatures you control have double strike.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, you may draw a card.

Flash
When this creature enters, you may cast target instant card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

: You gain 1 life.

Destroy target artifact or enchantment.
Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

(: Add .)

Search your library for a land card, reveal it, put it into your hand, then shuffle.

: Add for each Elf on the battlefield.

+1: Create a 1/1 colorless Servo artifact creature token.
+1: The next spell you cast this turn has affinity for artifacts. (It costs less to cast for each artifact you control as you cast it.)
−7: For each artifact you control, create a token that's a copy of it. Those tokens gain haste. Exile those tokens at the beginning of the next end step.
Saheeli, the Gifted can be your commander.

Sandman's power and toughness are each equal to the number of lands you control.
Sandman can't be blocked by creatures with power 2 or less.
: Return this card and target land card from your graveyard to the battlefield tapped.

Flash
Flying
When this creature enters, you may exile target non-Angel creature you control, then return that card to the battlefield under your control.

: Add .
: Add one mana of any color. Spend this mana only to cast an Ally spell or activate an ability of an Ally source.
, : Create a 1/1 white Ally creature token.

Flying
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever you cast an instant or sorcery spell with a single target, you may copy it. If you do, those spells gain wither. You may choose new targets for the copy.

Whenever you crank this Contraption, create two 1/1 colorless Gnome artifact creature tokens.

When this creature enters, you may search your library for an Elf card, reveal it, then shuffle and put that card on top.
: Add one mana of any color.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Each creature that's attacking one of your opponents has trample.
, : You may put a creature or Vehicle card from your hand onto the battlefield. If you put an artifact onto the battlefield this way, put two +1/+1 counters on it.

, Sacrifice a Wizard: Counter target spell.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)