Seal of Cleansing

Sacrifice Seal of Cleansing: Destroy target artifact or enchantment.

Seal of Primordium

Sacrifice Seal of Primordium: Destroy target artifact or enchantment.

Decree of Silence

Whenever an opponent casts a spell, counter that spell and put a depletion counter on Decree of Silence. If there are three or more depletion counters on Decree of Silence, sacrifice it.
Cycling {4}{U}{U} ({4}{U}{U}, Discard this card: Draw a card.)
When you cycle Decree of Silence, you may counter target spell.

Lunar Force

When an opponent casts a spell, sacrifice Lunar Force and counter that spell.

Realms Uncharted

Search your library for up to four land cards with different names and reveal them. An opponent chooses two of those cards. Put the chosen cards into your graveyard and the rest into your hand. Then shuffle.

Energy Flux

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."

Hesitation

When a player casts a spell, sacrifice Hesitation and counter that spell.

Sunken Field

Enchant land
Enchanted land has "{T}: Counter target spell unless its controller pays {1}."