Threaten [Tenth Edition] Human Noble Soldier {5}{U}: Gearseeker Serpent can't be

{5}{U}: Gearseeker Serpent can't be blocked this turn

or to simply cut it out

You may play that card without paying its mana cost for as long as Intet remains on the battlefield

Set: Commander Legends Type: Creature — Dragon Rarity: Mythic Cost: {4}{R}{R} Flying

When Invasion of Kaladesh enters the battlefield

Threaten [Tenth Edition] Human Noble Soldier {5}{U}: Gearseeker Serpent can't beSet: Tenth Edition Type: Sorcery Rarity: Uncommon Cost: {2}{R} Untap target creature and gain control of it until end of turn. That creature gains haste until end of turn. (It can attack and {T} this turn.) Goblins' motivational techniques are crude, but effective.