First strike
Other Knight creatures you control get +1/+1 and have indestructible.

First strike
As this creature enters, you may put a name sticker on it.
This creature has protection from names that start with the same letter as a name sticker on It.

When this creature enters, create a 1/1 white Human Soldier creature token.
Warp

Level up

First strike
: This creature gains protection from the color of your choice until end of turn.

First strike
If you would gain life, you gain that much life plus 1 instead.
: This creature gets +1/+1 until end of turn.

Whenever an enchantment you control is put into a graveyard from the battlefield, create a 1/1 white Bird creature token with flying.

Protection from black
Exalted

First strike
Hexproof from black (This creature can't be the target of black spells or abilities your opponents control.)
This creature gets +1/+0 as long as any player controls a black permanent.

Vigilance
As long as you are way behind, Knight of Lost Causes gets +3/+3 and has indestructible. (You are way behind if, at any point during this turn, an opponent had 10 or more life than you, controlled at least three more creatures than you, or had at least three more cards in hand than you.)

First strike
Lifelink

Vigilance
Extort

Suspend 5 —
When this creature enters, other creatures you control get +1/+1 until end of turn.

This creature can block an additional creature each combat.
Afterlife 1

Flying, flanking
Suspend 3 —

First strike
, Do the Hokey Pokey (Stand up, wiggle your butt, raise your hands above your head, and shake them wildly as you rotate 360 degrees): The next time a source of your choice would deal damage to Knight of the Hokey Pokey this turn, prevent that damage.

Flanking
If this creature would be destroyed, regenerate it.
: This creature can't be regenerated this turn. Only your opponents may activate this ability.

VERSION A
First strike, protection from black borders

VERSION B
First strike, protection from even collector numbers

VERSION C
First strike, protection from loose lips

VERSION D
First strike, protection from odd collector numbers

VERSION E
First strike, protection from two-word names

VERSION F
First strike, protection from watermarks

Vigilance
When this creature enters, create a 2/2 white and blue Knight creature token with vigilance.

: This creature gets +3/+3 until end of turn. Activate only once each turn.

First strike
When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.

Flanking
: Each creature without flanking blocking this creature gets -1/-1 until end of turn. Activate only once each turn.

Create two 2/2 white Knight creature tokens with vigilance.

When this creature enters, create two 1/1 white Soldier creature tokens.
, Sacrifice a Soldier: Prevent all combat damage that would be dealt this turn.

: Adapt 1.
Whenever one or more +1/+1 counters are put on this creature, it gains double strike until end of turn.

Convoke
When this creature enters, look at the top six cards of your library. You may reveal up to two creature cards with mana value X or less from among them, where X is the number of creatures that convoked this creature. Put the revealed cards into your hand, then shuffle.