Unmask [Mercadian Masques]Set: Mercadian Masques Type: Sorcery Rarity: Rare Cost: {3}{B} You may exile a black card from your hand rather than pay this spell's mana cost. Target player reveals their hand. You choose a nonland card from it. That player discards that card.

When Animate Dead leaves the battlefield

Set: Saviors of Kamigawa Type: Instant — Arcane Rarity: Common Cost: {2}{R} Sweep — Return any number of Mountains you control to their owner's hand

I'd have told you what it was

0: Look at the top card of your library

When Cyclopean Tomb is put into a graveyard from the battlefield

Its controller mills four cards

Set: Visions Type: Land Rarity: Uncommon {T}: Add {C}

Set: Legends Type: Creature — Horror Rarity: Rare Cost: {3}{B}{B}{B} First strike

"Dear Magic R&D

Those players put the exiled cards onto the battlefield

Set: Limited Edition Beta Type: Sorcery Rarity: Rare Cost: {3}{W} Destroy all lands

Set: Legends Type: Enchantment Rarity: Rare Cost: {3}{B} {B}