Goryo's Vengeance [Betrayers of Kamigawa] Darksteel

Goryo's Vengeance [Betrayers of Kamigawa] DarksteelSet: Betrayers of Kamigawa Type: Instant Arcane Rare Cost: {1}{B} Return target legendary creature card from your graveyard to the battlefield. That creature gains haste. Exile it at the beginning of the next end step. Splice onto Arcane {2}{B} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

They only specify the consequences should you fail

The battle plans were forgotten

Set: Limited Edition Beta Type: Artifact Uncommon Cost: {3} {2}

Set: From the Vault: Angels Type: Legendary Creature — Angel Rarity: Mythic Cost: {6}{W}{W}{W} Flying

If an effect causes you to discard a card

Set: Portal Three Kingdoms Type: Creature — Human Soldier Archer Uncommon Cost: {R} Sacrifice Fire Bowman: It deals 1 damage to any target

and up to one without

Creature spells you cast cost {1} less to cast for each +1/+1 counter on Animar

{T}: Put a mire counter on target non-Swamp land

/ One clover

you may pay {X}

"Barbarian tribes with their rulers are inferior to Chinese states without them