Ordeal of Ardenvale
Enchantment — Aura
Enchant creature
Whenever enchanted creature attacks, create a 1/1 white Human creature token. Then if you control six or more creatures, sacrifice Ordeal of Ardenvale.
When you sacrifice Ordeal of Ardenvale, creatures you control get +2/+1 and are Knights in addition to their other types until end of turn.
Ardenvale knights practice the virtue of loyalty, the first to unite humanity against the elven kings.

Ordeal of Vantress
Enchantment — Aura
Enchant creature
Whenever enchanted creature attacks, draw a card. Then if you have six or more cards in hand, sacrifice Ordeal of Vantress.
When you sacrifice Ordeal of Vantress, the next time you cast an instant or sorcery spell this turn, copy it. You may choose new targets for the copy.
Vantress knights practice the virtue of knowledge, to be discovered through adventure and shared with all.

Ordeal of Lochthwain
Enchantment — Aura
Enchant creature
Whenever enchanted creature attacks, it gains indestructible until end of turn.
When you sacrifice Ordeal of Lochthwain or enchanted creature, return target creature card from your graveyard to the battlefield.
Lochthwain knights practice the virtue of persistence, in both love and war, the heart never ceasing.

Ordeal of Embereth
Enchantment — Aura
Enchant creature
Whenever enchanted creature attacks, attacking creatures you control get +1/+0 until end of turn. Then if the total power of attacking creatures you control is 6 or greater, sacrifice Ordeal of Embereth.
When you sacrifice Ordeal of Embereth, search your library for an Equipment card, put it onto the battlefield, attach it to a creature you control, then shuffle.
Embereth knights practice the virtue of courage, which is not never fearing but never giving into that fear.