As long as an opponent controls a creature with flying not named Escaped Shapeshifter, Escaped Shapeshifter has flying. The same is true for first strike, trample, and protection from any color.

Enchant creature
Enchanted creature gets +1/+1 for each enchantment you control and has first strike.

First strike, haste
Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)
Each other creature you control with a +1/+1 counter on it has haste.

Enchant creature
Enchanted creature gets +2/+2.
As long as another Aura is attached to enchanted creature, it has first strike and lifelink.

Sacrifice a land: Fault Riders gets +2/+0 and gains first strike until end of turn. Activate this ability only once each turn.

Enchant creature
Creatures you control that are enchanted get +1/+1 and have first strike.

First strike, haste
Whenever Fervent Champion attacks, another target attacking Knight you control gets +1/+0 until end of turn.
Equip abilities you activate that target Fervent Champion cost less to activate.

Target creature gets +1/+0 and gains first strike and haste until end of turn.

Other Soldier creatures get +1/+1 and have first strike. (They deal combat damage before creatures without first strike.)

First strike
If a source would deal damage to an opponent, it deals double that damage to that player instead.

First strike (This creature deals combat damage before creatures without first strike.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Fiendslayer Paladin can't be the target of black or red spells your opponents control.

: Figure of Destiny becomes a Kithkin Spirit with base power and toughness 2/2.
: If Figure of Destiny is a Spirit, it becomes a Kithkin Spirit Warrior with base power and toughness 4/4.
: If Figure of Destiny is a Warrior, it becomes a Kithkin Spirit Warrior Avatar with base power and toughness 8/8, flying, and first strike.

First strike
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Flying, first strike
At the beginning of your upkeep, if Firemane Angel is in your graveyard or on the battlefield, you may gain 1 life.
: Return Firemane Angel from your graveyard to the battlefield. Activate this ability only during your upkeep.

Each attacking or blocking creature with the lowest collector number among attacking or blocking creatures has first strike.

Enchant creature
As long as enchanted creature is black, it gets +1/+1 and has wither. (It deals damage to creatures in the form of -1/-1 counters.)
As long as enchanted creature is red, it gets +1/+1 and has first strike.

Target creature gets +3/+3 and gains first strike until end of turn.

Flying, first strike
: Flailing Manticore gets +1/+1 until end of turn. Any player may activate this ability.
: Flailing Manticore gets -1/-1 until end of turn. Any player may activate this ability.

Whenever you scry, Flamespeaker Adept gets +2/+0 and gains first strike until end of turn.

Flash
Enchant creature
Enchanted creature gets +1/+0 and has first strike.