Celestial Mantle [Zendikar]Set: Zendikar Type: Enchantment Aura Rarity: Rare Cost: {3}{W}{W}{W} Enchant creature Enchanted creature gets +3 +3. Whenever enchanted creature deals combat damage to a player, double its controller's life total. Upon such armor, even a mountain would break.

It's still a land

Then each player reveals their chosen card

"The things I once imagined would be my greatest achievements were only the first steps toward a future I can only begin to fathom

The slivers would survive

Enchanted creature gets +2/+2 and has "Whenever this creature attacks

defending player exiles the top twenty cards of their library

you may have target opponent discard a card

−10: Target player's life total becomes 1

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {0} Counter target spell

They sapped the strength of our defenses

At the beginning of each player's upkeep

Until your next turn