Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Search your library for any number of land cards, exile them, then shuffle.

Whenever an opponent casts a red spell, you gain 2 life.

White spells you cast cost less to cast.

Black spells you cast cost less to cast.

: Target opponent chooses any number of creatures they control. During that player's next turn, the chosen creatures attack if able, and other creatures can't attack. At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack this turn. Activate only during your turn.

Whenever this creature deals damage to a player, that player discards all the cards in their hand, then draws that many cards.

Enchant creature
Enchanted creature gets +3/+3.
When enchanted creature becomes the target of a spell or ability, destroy that creature. It can't be regenerated.

: The next time a blue source of your choice would deal damage to you this turn, prevent that damage.

: The next time a green source of your choice would deal damage to you this turn, prevent that damage.

: Prevent the next 1 damage that would be dealt to any target this turn.

: The next time a black source of your choice would deal damage to you this turn, prevent that damage.

Counter target activated ability from an artifact, creature, enchantment, or land. That permanent's activated abilities can't be activated this turn. (Mana abilities can't be targeted.)
Draw a card.

Cast this spell only before the combat damage step.
Target attacking or blocking creature gets +4/+0 until end of turn. Destroy that creature at the beginning of the next end step.

Destroy target artifact or enchantment.

All Sliver creatures have flying.

Blue spells you cast cost less to cast.

Prevent all combat damage that would be dealt this turn. You gain 1 life for each attacking creature.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Red spells cost more to cast.

Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever a creature with shadow dies, put a +1/+1 counter on this creature.

Destroy target artifact.

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

Return up to X target cards from your graveyard to your hand, where X is the number of black permanents target opponent controls as you cast this spell.

At the beginning of your upkeep, if you have three or fewer cards in hand, this artifact deals 1 damage to target opponent or planeswalker.

: This creature deals 1 damage to any target and 1 damage to you.

Target player sacrifices a creature of their choice.

Shadow (This creature can block or be blocked by only creatures with shadow.)

Flying

Reach (This creature can block creatures with flying.)

: Put a -1/-1 counter on target creature.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
The next time a source of your choice would deal damage to you this turn, prevent that damage.

All Sliver creatures have first strike.

Target blocking creature gets +4/+4 until end of turn.
Draw a card.

, : Exile any number of cards from your hand face down. Put that many cards from the top of your library into your hand. Then look at the exiled cards and put them on top of your library in any order.

Tap an untapped creature you control: Untap target basic land.