{R}, Sacrifice Magma Flow: It deals 3 damage to any target. Activate only as a sorcery.
{1}{R}, Discard a card, Sacrifice Magma Flow: Draw two cards.

Amity — Whenever you attack with Magma Grunt and exactly one other creature, Magma Grunt deals 1 damage to each opponent.

{2}: Magnetic Mystery gets +1/+0 until end of turn. Activate only as a sorcery.
As long as you control another artifact, Magnetic Mystery has flying.

Whenever Magnetic Rhetorician attacks, make a pledge.

When Magnetic Snuffler enters, return target Equipment card from your graveyard to the battlefield attached to Magnetic Snuffler.
Whenever you sacrifice an artifact, put a +1/+1 counter on Magnetic Snuffler.

{1}: Untap Magnetling.
{1}: Magnetling can't be blocked by creatures with power 2 or less this turn.
{1}: Choose a card type. Magnetling loses that type until end of turn.
{1}: Magnetling gets +1/-1 or -1/+1 until end of turn.

Flow — {3}{U}: Copy target triggered ability you control. You may choose new targets for the copy.

Flying, lifelink
When this creature leaves the battlefield, draw a card.

Destroy target creature or planeswalker if it has mana value 3 or less or if you control a legendary creature.

Trample
When Main Street Hooligang enters, if you control a green permanent, you may have Main Street Hooligang fight target creature.

Whenever you cast a spell with mana value 4 or greater, create a 4/3 red and green Spirit Beast creature token.
Whenever a creature you control deals 4 or more damage to a player, draw a card. This ability triggers only once each turn.

Target permanent gains hexproof until end of turn. If it's a creature, it also gets +1/+1 until end of turn.

Each opponent separates the creatures they control into two piles. For each opponent, you choose one of their piles. Each opponent sacrifices the creatures in their chosen pile.

When this enchantment enters, create two 1/1 white Citizen creature tokens.
Whenever you attack, target attacking creature gets +X/+0 until end of turn, where X is the number of creatures you control that aren't attacking.

{2}, {T}: Exile target creature you control, then reveal the top card of your library. If the revealed card is a creature card, put it onto the battlefield. Otherwise, return the exiled card to the battlefield under its owner's control.

Until end of turn, target creature gets +2/+2 and gains trample and “Whenever this creature deals combat damage to a player, return target permanent card with mana value less than or equal to the damage dealt from your graveyard to your hand.”

{T}: Add one mana of any color.
Whenever you cast a multicolored spell, untap Mana Harvesters. This ability triggers only once each turn.

When this enchantment enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{3}{G}: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.

{6}: Put two +1/+1 counters on target creature you control. Activate only as a sorcery and only if your devotion to white is three or more.

Sacrifice a Treasure: Put a loyalty counter on Marilye, Dreaming Big.
[+1]: Draw a card, then discard a card. If you discarded a nonland card this way, create a tapped Treasure token.
[–3]: Gain control of target artifact. It becomes a Treasure artifact, loses all other types, and loses all abilities except for activated mana abilities.
[–8]: Target opponent chooses a nonland permanent they control. You gain control of the rest.

You lose life equal to the number of cards you've drawn this turn, then draw a card. You may repeat this process any number of times.

As an additional cost to cast this spell, sacrifice a creature.
Exile the top X cards of your library, where X is the sacrificed creature's power. Until the end of your next turn, you may play those cards.

When this creature enters, you may return another creature you control to its owner's hand. If you do, draw a card.

At the beginning of combat on your turn, you may have target Advisor you control get +2/-1 until end of turn.

{G}, Sacrifice this creature: Exile target artifact, enchantment, or card from a graveyard. If you own that permanent or card, cache it instead.