At the beginning of combat on your turn, you may blight 1. When you do, target creature gains haste until end of turn. (To blight 1, put a -1/-1 counter on a creature you control.)

Whenever you cast a noncreature spell, amass Goblins 1. (Put a +1/+1 counter on an Army you control. It's also a Goblin. If you don't control an Army, create a 0/0 black Goblin Army creature token first.)

Mirkwood Pathmaker's power and toughness are each equal to the number of lands you control.

Vigilance
Whenever another Elf you control enters, this creature gets +1/+1 until end of turn.
: Add X mana of any one color, where X is this creature's power. Spend this mana only to cast Elf spells and activate abilities of Elf sources.

Landfall — Whenever a land you control enters, equipped creature gets +2/+2 until end of turn.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. It enters tapped and attacking.)
When this creature enters, choose target creature an opponent controls. Exile that creature until this creature leaves the battlefield. If this creature's sneak cost was paid, instead exile the chosen creature.

As an additional cost to cast this spell, discard a card.
Draw two cards.
Flashback (You may cast this card from your graveyard for its flashback cost and any additional costs. Then exile it.)

Equipped creature gets +2/+1.
When this Equipment enters, attach it to target creature you control.
Equip—Sacrifice another nonland permanent. Activate only once each turn.

When this enchantment enters, draw three cards, then discard a card.
When a Cartouche you control enters, return this enchantment to its owner's hand.

Flying
Avian Telepathy — When Falcon enters, create Redwing, a legendary 1/1 blue Bird Scout creature token with flying and "Whenever Redwing attacks, surveil 1." (Look at the top card of your library. You may put it into your graveyard.)

When this creature enters, you may sacrifice an artifact or discard a card. If you do, draw a card.

Flash
When this Equipment enters, attach it to target creature you control. That creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)
Equipped creature gets +1/+2.
Equip

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
: Shuffle enchanted creature into its owner's library, then manifest dread. Activate only as a sorcery.

Flying
When this creature enters, put a +1/+1 counter on target creature you control without flying.

Infusion — When you cast this spell, copy it if you gained life this turn. You may choose new targets for the copy.
Target creature gets +2/+4 until end of turn.

This creature can't attack unless you control another artifact.

Put a +1/+1 counter on target creature you control. It gains reach, trample, and indestructible until end of turn. Untap it. (Damage and effects that say "destroy" don't destroy it.)

You gain 2 life. Create a Lander token. (It's an artifact with ", , Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")

Flying
Whenever another Angel you control enters, put a +1/+1 counter on this creature.

Destroy target creature. You lose 2 life.