Kami of the Honored Dead [Betrayers of Kamigawa] Hydra dreams build their nest with

dreams build their nest with fragments dropped from day's caravan

Set: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

Llanowar forges weapons of steel

Set: Masters 25 Type: Artifact Rarity: Mythic Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it

They become 5/5 Elemental creatures with flying and haste until end of turn

Kami of the Honored Dead [Betrayers of Kamigawa] Hydra dreams build their nest withSet: Betrayers of Kamigawa Type: Creature Spirit Rarity: Uncommon Cost: {5}{W}{W} Flying Whenever Kami of the Honored Dead is dealt damage, you gain that much life. Soulshift 6 (When this creature dies, you may return target Spirit card with mana value 6 or less from your graveyard to your hand.)