Counter target activated ability from a nonland source.
Draw a card.

Untap all lands you control. Until end of turn, they become 1/1 Elemental artifact creatures with vigilance, indestructible, and haste in addition to their other types.

Creatures you control have “{T}: Add one mana of any color” and “{T}: Surveil 1.”

Activated abilities of other artifacts and enchantments with mana value 3 or less can't be activated.
{1}, Sacrifice Disestablishmentarianism: Exile target artifact or enchantment.

Add {W}{U}{B}{R}.

Fabric — Target creature you control gets +X/+X until end of turn, where X is the number of enchantments you control. It deals damage equal to its power to up to one target creature you don't control.

{G}, Sacrifice Entangled Fossil: Target card in your graveyard gains surface until end of turn. The surface cost is equal to its mana cost.
Surface {4}{G}{G}. Entangled Fossil surfaces transformed.

Enchant land
Enchanted land has “{T}: Add {G}{G}.”

Target creature gets +X/+X until end of turn. It must be blocked each combat this turn if able.

Enchant creature with another Aura attached to it
Enchanted creature gets +3/+3 and has trample, vigilance, and reach.

When Everpresent Rot enters, create a 1/1 green Saproling creature token, surveil 1, then you gain 1 life.
When one or more permanent cards leave your graveyard, return Everpresent Rot to its owner's hand.

Reveal the top four cards of your library. Put up to two permanent cards from among them into your hand and the rest into your graveyard. You may put land cards onto the battlefield tapped rather than your hand.
Flashback—{3}{G}, Tap an untapped Ruin you control.

Enchant creature
When Fable of Tooth and Fur enters, create three 2/2 green Wolf creature tokens.
Enchanted creature gets +1/+1 for each creature you control and gains trample.

Enchant creature
Enchanted creature gets +1/+1 and has vigilance and trample.

Enchant land
Enchanted land has “{T}: Add one mana of any color.”

Choose one or both —
• Target Kraken, Leviathan, Octopus, or Serpent creature you control gets +2/+1 until end of turn.
• Target creature you control fights target creature you don't control.

Enchant creature you control
Enchanted creature gets +1/+1.
When this Aura enters, enchanted creature fights up to one target creature.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Return target permanent card from your graveyard to your hand.

Create three Berry tokens, then sacrifice any number of Berries. For each Berry sacrificed this way, creatures you control get +1/+1 until end of turn.

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

Whenever this Subroutine runs, you may play target permanent card from your graveyard this turn. It enters with a finality counter on it.

Enchant creature
When this Aura enters, draw a card.
If one or more +1/+1 counters would be put on enchanted creature, that many plus one +1/+1 counters are put on it instead.

When Golden Age enters, you may sacrifice a land. If you do, search your library for a land card, put it onto the battlefield, then shuffle.
You've cast a multicolored spell this turn.

Enchant creature
When Grasp of the Yeti enters, you may destroy target creature with flying, artifact, or enchantment.
Enchanted creature gets +3/+3.

Search your library for a basic land card, put it into the battlefield tapped, then shuffle. If this spell's flashback cost was paid, search your library for a land card rather than a basic land card.
Flashback—{G}, Sacrifice a land.