Vivien's Arkbow [War of the Spark]Set: War of the Spark Type: Legendary Artifact Rarity: Rare Cost: {1}{G} {X}, {T}, Discard a card: Look at the top X cards of your library. You may put a creature card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

that creature's controller gains control of Contested War Zone

each opponent sacrifices another creature

Set: Scars of Mirrodin Type: Enchantment Rarity: Rare Cost: {3}{B}{B} Whenever an opponent casts a spell

Set: Friday Night Magic 2003 Type: Creature — Boar Beast Rarity: Rare Cost: {5}{G}{G} Cycling {2}{G} ({2}{G}

Its precious corpses dance like puppets to attract mindless nim prey

Set: Commander 2015 Type: Legendary Creature — Cat Giant Rarity: Rare Cost: {3}{W}{W}{W} Whenever Jareth

Set: Ixalan Type: Land Rarity: Rare Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp

Impede the hive

leonin seer

Set: XY: Base Set Type: Colorless Rarity: Uncommon

shroud (This creature can't be the target of spells or abilities

Set: Saviors of Kamigawa Type: Legendary Creature — Spirit Rarity: Rare Cost: {8}{B}{B}{G}{G} When Iname as One enters the battlefield