Horus the Black Flame Dragon LV6 [DR3-EN007] Super Rare Minotaur Pirate The "Sheep Tokens" cannot be

The "Sheep Tokens" cannot be used as a Tribute for a Tribute Summon (or Set)

Set: Commander 2013 Oversized Type: Legendary Creature — Giant Soldier Rarity: Mythic Cost: {3}{W}{U}{B} At the beginning of your upkeep

Set: Lorwyn Type: Sorcery Rarity: Rare Cost: {B} Target player reveals their hand

Set: Commander 2014 Type: Artifact Creature — Phyrexian Wurm Rarity: Mythic Cost: {6} Deathtouch

If you control a commander as you cast this spell

Horus the Black Flame Dragon LV6 [DR3-EN007] Super Rare Minotaur Pirate The "Sheep Tokens" cannot beSet: Dark Revelation Volume 3 Card type: Effect Monster Rarity: Super Rare Attack: 2300 Defense: 1600 While this card is on the field, it is unaffected by the effects of Spell Cards. During the End Phase of a turn that this card destroyed a monster by battle, by sending this card to the Graveyard, Special Summon 1 "Horus the Black Flame Dragon LV8" from your hand or Deck.