Knights

{T}: Add one mana of any color. Spend this mana only to cast a creature spell.

Other creatures you control get +1/+1.

As Cavern of Souls enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Look at the top six cards of your library. Put up to two creature cards with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in any order.

({T}: Add {G}.)

You may cast Haakon, Stromgald Scourge from your graveyard, but not from anywhere else.

As long as Haakon is on the battlefield, you may cast Knight spells from your graveyard.

When Haakon dies, you lose 2 life.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Whenever Hero of Bladehold attacks, create two 1/1 white Soldier creature tokens that are tapped and attacking.

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

Other Knight creatures you control get +1/+1 and have indestructible. (Damage and effects that say "destroy" don't destroy them.)

Double strike, protection from black and from green

Flying

Whenever another creature enters the battlefield under your control, you may discard a card. If you do, put a +1/+1 counter on that creature, it gains haste until end of turn, and it becomes a Vampire in addition to its other types.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

First strike, protection from red and from white

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

({T}: Add {W}.)

Steel Leaf Champion can't be blocked by creatures with power 2 or less.

Protection from white and from black

{W/B}: Stillmoon Cavalier gains flying until end of turn.

{W/B}: Stillmoon Cavalier gains first strike until end of turn.

{W/B}{W/B}: Stillmoon Cavalier gets +1/+0 until end of turn.

({T}: Add {G} or {W}.)

As Temple Garden enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Other green creatures you control get +1/+1.

Other white creatures you control get +1/+1.

If a spell or ability an opponent controls causes you to discard Wilt-Leaf Liege, put it onto the battlefield instead of putting it into your graveyard.

{T}, Pay 1 life, Sacrifice Windswept Heath: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.