Boros Garrison [Guilds of Ravnica Guild Kit] Centaur Advisor when a Machine monster is

when a Machine monster is destroyed by battle and sent to your GY: You can Special Summon 1 Machine monster from your Deck that has the same Attribute and less ATK than that destroyed monster in the GY

The ingredients for panic include equal parts danger

Set: Darksteel Type: Creature — Beast Rarity: Common Cost: {6}{U} Affinity for artifacts (This spell costs {1} less to cast for each artifact you control

except "Gladiator Beast Laquari"

Sawtooth Ogre deals 1 damage to that creature at end of combat

Boros Garrison [Guilds of Ravnica Guild Kit] Centaur Advisor when a Machine monster isSet: Guilds of Ravnica Guild Kit Type: Land Rarity: Common Boros Garrison enters the battlefield tapped. When Boros Garrison enters the battlefield, return a land you control to its owner's hand. {T}: Add {R}{W}.