Invasion

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Whenever a creature enters the battlefield under your control, you may destroy target artifact or enchantment.

Casting Cost: 

: Search your library for a legendary card, reveal that card, and put it into your hand. Then shuffle your library.

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Domain — Creatures can't attack you unless their controller pays Variable Colorless for each creature he or she controls that's attacking you, where X is the number of basic land types among lands you control.

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Whenever Crosis, the Purger deals combat damage to a player, you may pay . If you do, choose a color, then that player reveals his or her hand and discards all cards of that color.

Casting Cost: 

Separate all creatures target player controls into two piles. Destroy all creatures in the pile of that player's choice. They can't be regenerated.

Casting Cost: 

Whenever Dromar, the Banisher deals combat damage to a player, you may pay . If you do, choose a color, then return all creatures of that color to their owners' hands.

Casting Cost: 

, : Gain control of target legendary permanent. (This effect lasts indefinitely.)

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You may cast Saproling Symbiosis as though it had flash if you pay  more to cast it. (You may cast it any time you could cast an instant.)

Put a 1/1 green Saproling creature token onto the battlefield for each creature you control.

Casting Cost: 

Other enchantments you control have shroud. (They can't be the targets of spells or abilities.)

, Sacrifice Sterling Grove: Search your library for an enchantment card and reveal that card. Shuffle your library, then put the card on top of it.

Casting Cost: 

Prevent all combat damage that would be dealt this turn.

Each attacking creature doesn't untap during its controller's next untap step.