Deoxys (2/95) [HeartGold & SoulSilver: Call of Legends] Water put a +1/+1 counter on

put a +1/+1 counter on it and it becomes renowned

They only specify the consequences should you fail

Set: Legends Type: Legendary Creature — Human Cleric Rarity: Rare Cost: {2}{G}{W} {T}: Prevent the next 2 damage that would be dealt to target creature this turn

Set: Amonkhet Invocations Type: Legendary Creature — God Rarity: Mythic Cost: {2}{B} Menace

−5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn

Deoxys (2/95) [HeartGold & SoulSilver: Call of Legends] Water put a +1/+1 counter onSet: HeartGold & SoulSilver: Call of Legends Type: Psychic Rarity: Holo Rare Retreat cost: Colorless