Gabriel Angelfire

At the beginning of your upkeep, choose flying, first strike, trample, or rampage 3. Gabriel Angelfire gains that ability until your next upkeep. (Whenever a creature with rampage 3 becomes blocked, it gets +3/+3 until end of turn for each creature blocking it beyond the first.)

Cosmic Horror

First strike
At the beginning of your upkeep, destroy Cosmic Horror unless you pay . If Cosmic Horror is destroyed this way, it deals 7 damage to you.

Tundra Wolves

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

Kobold Overlord

First strike
Other Kobold creatures you control have first strike.

Lord Magnus

First strike
Creatures with plainswalk can be blocked as though they didn’t have plainswalk.
Creatures with forestwalk can be blocked as though they didn’t have forestwalk.

Livonya Silone

First strike; legendary landwalk (This creature can’t be blocked as long as defending player controls a legendary land.)

Gosta Dirk

First strike
Creatures with islandwalk can be blocked as though they didn’t have islandwalk.

White Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything black.)

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything white.)

White Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything black.)

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything white.)

Wall of Spears

Defender (This creature can’t attack.)
First strike

Yawgmoth Demon

Flying (This creature can’t be blocked except by creatures with flying or reach.)
First strike (This creature deals combat damage before creatures without first strike.)
At the beginning of your upkeep, you may sacrifice an artifact. If you don’t, tap Yawgmoth Demon and it deals 2 damage to you.

White Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything black.)

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything white.)

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything white.)