When Plasma Armory enters or leaves the battlefield, create a Weapon token.
{2}, Sacrifice Plasma Armory: Draw a card.

When Player Band enters, create a 2/3 colorless Bard creature token, then attach Player Band to it.
Equipped creature gets +1/+1.
{1}, Unattach Player Band: Tap equipped creature. It gains hexproof until end of turn.
Equip {3}

Each player mills two cards. When you do, return target creature card from your graveyard to your hand.

Once each turn, when you activate a creature, you may create a tapped token that's a copy of it, except it's a 1/1 Toy in addition to its other types and it isn't legendary.

Poised Flame deals 2 damage to any target.
Add {R}{R}. You can't spend this mana to cast spells.

Enchant creature
Enchanted creature has “At the beginning of your upkeep, sacrifice a creature. If you can't, you lose 3 life.”

Poisoned Strike deals 3 damage to target creature. That creature's controller mills three cards.

When Pollen Warning enters, create a 1/1 green Plant creature token, then put a +1/+1 counter on a creature you control.

Choose target nonland permanent you control and up to two target nonland permanents you don't control. Return those permanents to their owner's hands.

Possibility Heights enters tapped.
{T}: Add {R} or {G}.
{T}, Discard another card named Possibility Heights: Draw a card.

Untap target non-Assembly-Worker artifact. Put a charge counter on it.

Until end of turn, target creature gains “When this creature dies, return it to the battlefield tapped under its owner's control and teach it flying.”

{T}: Add {C}.
{3}, {T}, Sacrifice Prickly Dunes: Create two 1/1 green Plant creature tokens. Activate only as a sorcery.

Primal Fissure enters tapped unless you control two or fewer other lands.
{T}, Sacrifice Primal Fissure: Search your library for a basic land card, put it onto the battlefield, then shuffle.

Enchant creature
Enchanted creature gets +3/+3.
Once each turn, you may cast a spell that targets enchanted creature without paying its mana cost.

When Primordial Seas enters and whenever you cast a spell, create a token that's a copy of another target permanent you control.

Reveal the top five cards of your library. You may put a colorless permanent card, a monocolored permanent card, and/or a multicolored permanent card from among them into your hand. Put the rest on the bottom of your library in any order.

Once during each of your turns, you may cast a multicolored spell or a spell with {VP} in its mana cost from your graveyard. When you cast a spell this way, it gains “If this card would be put into a graveyard from anywhere, exile it instead.”

Pristine Grounds enters tapped unless you control no other lands.
{T}: Add one mana of any type Pristine Grounds hasn't produced this game.

Target player discards two cards. If all the cards discarded this way share a card type, that player loses 3 life.

Whenever you cast a spell, you may pay {X}, where X is that spell's mana value. If you do, copy it. You may choose new targets for the copy. Do this only once each turn.

Whenever you gain life, you may create a 0/0 colorless Robot artifact creature token with X +1/+1 counters on it, where X is the amount of life you gained. Do this only once each turn.

Enchant creature
Enchanted creature gets +1/+1 and can't block.
Wander {1}{B}

Amity — This spell costs {R} less to cast if you attacked with exactly two creatures this turn.
When you cast your next instant or sorcery spell this turn, copy it. You may choose new targets for the copy.

Target creature gets +1/+1 and gains deathtouch until end of turn. Scry 1.