You have no maximum hand size.
If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

Flying

Whenever a player casts a black spell, you may pay . If you do, you gain 1 life.

Destroy target artifact. It can't be regenerated. That artifact's controller gains life equal to its mana value.

Prevent the next 1 damage that would be dealt to any target this turn.
Draw a card at the beginning of the next turn's upkeep.

Target player gains X life.

Enchant creature
Enchanted creature gets +2/+1.

Look at the top three cards of target player's library, then put them back in any order. You may have that player shuffle.
Draw a card at the beginning of the next turn's upkeep.

Prevent all combat damage that would be dealt this turn.

, Sacrifice this creature: Destroy target Wall.

Enchant creature
Enchanted creature gets +1/+1.
: Enchanted creature gets +0/+1 until end of turn.

Enchant creature
Enchanted creature can attack as though it had haste.
: Untap enchanted creature. Activate only during your turn and only once each turn.

Target creature gets +X/+0 until end of turn.

First strike (This creature deals combat damage before creatures without first strike.)

Counter target spell with mana value X. (For example, if that spell's mana cost is , X is 5.)

Protection from white
: This creature gains first strike until end of turn.
: This creature gets +1/+0 until end of turn.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

: Counter target black spell.

Prevent the next 3 damage that would be dealt to target creature this turn. At the beginning of the next end step, put a +0/+1 counter on that creature for each 1 damage prevented this way.

: Prevent the next 1 damage that would be dealt to any target this turn.

: Tap target creature with power 2 or less.

Tap target artifact, creature, or land.
Draw a card at the beginning of the next turn's upkeep.

You may choose not to untap this artifact during your untap step.
, : Target creature gets +1/+1 for as long as this artifact remains tapped.

Players skip their untap steps.
At the beginning of your upkeep, sacrifice this enchantment unless you pay .

Flying (This creature can't be blocked except by creatures with flying or reach.)

Destroy target artifact.

: Target creature gets +1/+1 until end of turn.

: Add one mana of any color that a land an opponent controls could produce.

This creature can't block creatures with power 2 or greater.

If you would draw a card during your draw step, instead you may skip that draw. If you do, until your next turn, you can't be attacked except by creatures with flying and/or islandwalk.

First strike

At the beginning of combat on your turn, this creature gains banding until end of combat. (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 being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's blocking.)
Whenever this creature becomes blocked by a Wall, destroy that Wall at end of combat.

, : Untap target creature.

Enchant creature
Enchanted creature gets +1/+0.
: Regenerate enchanted creature.

: The next time a white source of your choice would deal damage to you this turn, prevent that damage.

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)