Prowling Serpopard [Amonkhet Prerelease Promos] SV8 Enchanted creature has "Whenever this

Enchanted creature has "Whenever this creature becomes untapped

any number of target players each mill two cards

You may have Phyrexian Metamorph enter the battlefield as a copy of any artifact or creature on the battlefield

1 Niblis of Frost

Master Tactician — Whenever one or more tokens enter the battlefield under your control

Prowling Serpopard [Amonkhet Prerelease Promos] SV8 Enchanted creature has "Whenever thisSet: Amonkhet Prerelease Promos Type: Creature Cat Snake Rarity: Rare Cost: {1}{G}{G} This spell can't be countered. Creature spells you control can't be countered. The viziers serving Rhonas, the god of strength, maintain the menagerie of animals employed during his trial.