{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color. When Chromatic Star is put into a graveyard from the battlefield, draw a card.

Prototype {3}{G} — 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) When Boulderbranch Golem enters the battlefield, you gain life equal to its power.

Whenever an artifact is put into a graveyard from the battlefield, you may gain 5 life.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

When Self-Assembler enters the battlefield, you may search your library for an Assembly-Worker creature card, reveal it, put it into your hand, then shuffle.

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.) Ulamog's Crusher attacks each combat if able.

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

When Crystal Grotto enters the battlefield, scry 1. {T}: Add {C}. {1}, {T}: Add one mana of any color.

({T}: Add {G}.)

{T}: Add {C}. {3}, {T}, Sacrifice Haunted Fengraf: Return a creature card at random from your graveyard to your hand.

Rugged Highlands enters the battlefield tapped. When Rugged Highlands enters the battlefield, you gain 1 life. {T}: Add {R} or {G}.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

Prevent all combat damage that would be dealt this turn.

Return target creature or land card from a graveyard to its owner's hand. You gain 6 life.

Destroy all non-Aura enchantments.

Reach When Twin-Silk Spider enters the battlefield, create a 1/2 green Spider creature token with reach.

Whenever an artifact is put into a graveyard from the battlefield, you may gain 5 life.