Enchant creature
When Ancestral Vengeance enters the battlefield, put a +1/+1 counter on target creature you control.
Enchanted creature gets -1/-1.

Crackling Doom deals 2 damage to each opponent. Each opponent sacrifices a creature with the greatest power among creatures that player controls.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
When you cast this spell, target opponent reveals their hand. You choose from it a nonland card with converted mana cost 3 or less and a card with converted mana cost 4 or greater. That player discards those cards.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Devoid (This card has no color.)
When Eyeless Watcher enters the battlefield, create two 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add ."

When False Prophet dies, exile all creatures.

Target opponent looks at the top four cards of your library and separates them into a face-down pile and a face-up pile. Put one pile into your hand and the other into your graveyard.

Menace
Cycling (, Discard this card: Draw a card.)

All damage that would be dealt this turn to target creature you control by a source of your choice is dealt to another target creature instead.

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Destroy target creature.

Reach (This creature can block creatures with flying.)
Whenever Netcaster Spider blocks a creature with flying, Netcaster Spider gets +2/+0 until end of turn.

Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.

, Sacrifice Renowned Weaver: Create a 1/3 green Spider enchantment creature token with reach. (It can block creatures with flying.)

Rolling Thunder deals X damage divided as you choose among any number of targets.

Creatures with power greater than Silumgar Assassin's power can't block it.
Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)
When Silumgar Assassin is turned face up, destroy target creature with power 3 or less an opponent controls.

: Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.

When Warfire Javelineer enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard.

Return an Elf you control to its owner's hand: Untap target creature. Activate this ability only once each turn.