Gatekeeper of Malakir [Zendikar]

Gatekeeper of Malakir [Zendikar]Set: Zendikar Type: Creature Vampire Warrior Rarity: Uncommon Cost: {B}{B} Kicker {B} (You may pay an additional {B} as you cast this spell.) When Gatekeeper of Malakir enters the battlefield, if it was kicked, target player sacrifices a creature. "You may enter the cityonce the toll is paid."

Set: Amonkhet Type: Creature — Human Warrior Rarity: Uncommon Cost: {2}{G}{W} You may exert Ahn-Crop Champion as it attacks

Set: Theros Tokens Type: Emblem — Elspeth Rarity: Common Creatures you control get +2/+2 and have flying

Sacrifice an artifact: Pia and Kiran Nalaar deals 2 damage to any target

Set: Shards of Alara Type: Legendary Artifact Creature — Sphinx Rarity: Mythic Cost: {3}{W}{U}{B} Flying

look at the top five cards of your library

remove a -1/-1 counter from each creature you control

it puts twice that many of those counters on that permanent instead

Set: Archenemy: Nicol Bolas Type: Creature — Vampire Rarity: Rare Cost: {4}{U}{B}{R} Flying

Set: Return to Ravnica Type: Creature — Human Rogue Rarity: Uncommon Cost: {1}{B} {T}

Set: Signature Spellbook: Jace Type: Instant Rarity: Rare Cost: {U} Draw three cards

That is the best part

Any stray movement could betray the positions of the troops they protect and cost many lives