Creatures with flying can block only creatures with flying.
Creatures without flying have reach. (They can block creatures with flying.)

Flying
: This creature gets -2/+2 and loses flying until end of turn.

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of your upkeep, sacrifice this Aura unless you pay .

, : Until end of turn, target creature you control gains flying and has base toughness 1.

: Target spell becomes colorless.
: Target permanent becomes colorless until end of turn.

Target opponent discards a card at random, then discards a card.

Hammer of Bogardan deals 3 damage to any target.
: Return this card from your graveyard to your hand. Activate only during your upkeep.

As an additional cost to cast this spell, sacrifice a creature.
Create X 0/1 black Insect creature tokens, where X is the sacrificed creature's power.

Cast this spell only during an opponent's turn.
Tap target creature that player controls. That creature deals damage equal to its power to the player. Prevent all combat damage that would be dealt to and dealt by the creature this turn.

Flying
: This creature gets +1/+0 until end of turn. Activate only once each turn.

, : Put X charge counters on this artifact. Activate only as a sorcery.
At the beginning of your first main phase, if this artifact has a charge counter on it, tap it and remove all charge counters from it. Add for each charge counter removed this way.

At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a Pegasus.
: Create a 1/1 white Pegasus creature token with flying.

Draw three cards, then put two cards from your hand both on top of your library or both on the bottom of your library.

: This creature deals 4 damage to target attacking creature with flying.

Create a 5/5 blue Wall creature token with defender. Sacrifice it at the beginning of the next end step.

Destroy target land.

Defender (This creature can't attack.)
Flying
Whenever this creature blocks a creature, put four fungus counters on that creature. The creature gains "This creature doesn't untap during your untap step if it has a fungus counter on it" and "At the beginning of your upkeep, remove a fungus counter from this creature."

Put any number of target creature cards from your graveyard on top of your library.
Draw a card at the beginning of the next turn's upkeep.

Cast this spell only during the declare blockers step.
Target unblocked attacking creature becomes blocked. (This spell works on creatures that can't be blocked.)
Draw a card at the beginning of the next turn's upkeep.

Destroy target non-Swamp land. If that land was nonbasic, Choking Sands deals 2 damage to the land's controller.

Flying
As this creature enters, choose an opponent.
Haunting Apparition's power is equal to 1 plus the number of green creature cards in the chosen player's graveyard.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
: This creature gains menace until end of turn. (It can't be blocked except by two or more creatures.)

, : This creature deals 2 damage to target white creature.

Return this enchantment to its owner's hand: Target creature you cast this turn has base power and toughness 0/1 until your next upkeep. At the beginning of your next upkeep, put a +1/+1 counter on that creature.

As this enchantment enters, choose Island or Swamp.
Whenever a land of the chosen type an opponent controls becomes tapped, you gain 1 life.

As this enchantment enters, choose black or red.
At the beginning of your upkeep, sacrifice this enchantment unless you pay .
Whenever a creature of the chosen color deals damage to you or a white creature you control, this enchantment deals that much damage to that creature.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
As this enchantment enters, choose a color.
: The next time a source of your choice of the chosen color would deal damage to you this turn, prevent that damage.

Flying

At the beginning of each opponent's upkeep, if that player has five or more cards in hand, this artifact deals 2 damage to that player.

Enchant land
When this Aura enters, gain control of enchanted land until end of turn.
At the beginning of your upkeep, untap enchanted land. You gain control of that land until end of turn.

At the beginning of your upkeep, this creature deals 1 damage to you.

, : Create a 0/1 green Wall creature token with defender named Wood.
Sacrifice a token named Wood: Add .

Reach (This creature can block creatures with flying.)
Whenever this creature attacks, defending player may draw a card.

Trample; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

At the beginning of your upkeep, put a -1/-1 counter on each creature.

Each player who controls six or more lands chooses five lands they control and sacrifices the rest. Each player who controls four or fewer lands may search their library for up to X basic land cards and put them onto the battlefield, where X is five minus the number of lands they control. Then each player who searched their library this way shuffles.