Khalni Hydra [The List] Knife You must also offer monsters

You must also offer monsters whose total Level Stars equal 8 or more as a Tribute from the field or your hand

Set: Antiquities Type: Creature — Human Artificer Rarity: Rare Cost: {1}{W}{W} {W}{W}

"At this rate I fully expect to be replaced by a clockwork golem by year's end

Set: Time Spiral Type: Creature — Spirit Rarity: Rare Cost: {B}{B} Haste

Set: OTS Tournament Pack 9 Card type: Link/Effect Monster Rarity: Ultimate Rare Attack: 1500 1 non WATER "Sky Striker Ace" monster Monsters your opponent controls lose 100 ATK/DEF for each Spell in your GY

Khalni Hydra [The List] Knife You must also offer monstersSet: The List Type: Creature Hydra Rarity: Mythic Cost: {G}{G}{G}{G}{G}{G}{G}{G} This spell costs {G} less to cast for each green creature you control. Trample "In ages past, bargains were struck and promises were made. Now we must collect on our debt. Begin the hymns." Moruul, Khalni druid