While that strength stat is fairly low, he has the Challenger +2 trait, meaning that when he challenges, he gets a +2 Strength boost
Card Name Alternative Name Golbez, Clad in Darkness Mana Cost Type Legendary Creature - Human Knight Rarity Uncommon rules Text Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad deals 1 damage to each opponent.: Each player mills a card
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though hes not cheap, with an Ink cost of seven, when in play he changes the victory conditions of the game for all opponents
All in Deep Anal is a four for one which is pretty serious value, depending on how you consider the value of discarding it, just the flashback half is a two or three for one