When Keeper of Pearls enters or a creature scavenges it, you gain 2 life. Scavenge {G}({G}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)
{4}{G}: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.) When Mountain Bighorn becomes monstrous, you may have it fight target creature you don't control.
When Naive Apprentice enters, each player creates a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”) As long as an opponent controls an artifact, Naive Apprentice gets +2/+0.
When Olten Surveyor enters, choose any number. Each opponent creates a 1/1 colorless Servo artifact creature token for each mode chosen. • Destroy target artifact or enchantment with mana value 3 or less. • Shuffle up to four cards from target player's graveyard into their library. • You gain 4 life.
When Refuse Trawler enters, you may pay {G}. If you do, choose one — • Return a permanent card from your graveyard to your hand. • Rediscover a permanent card. (Look at the top card of your library. You may reveal it and put it into your hand if it's a permanent card. Otherwise, put it back or into your graveyard.)
Whenever you play a land, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”) {1}{G}{U}{R}, Sacrifice three Clues: Exile cards from the top of your library until you exile three nonland cards. You may cast any number of those cards without paying their mana costs.
Once each turn, when another creature you control enters, you may search your library for a card with the same name as that creature, reveal it, put it into your hand, then shuffle.
{T}: For each color among enchantments you control, add one mana of that color. {2}{G}{G}, Sacrifice Sower of Seeds: Shuffle any number of enchantment cards from your graveyard into your library. Create an X/X black Horror creature token, where X is the number of enchantment cards shuffled into your library this way.
Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.) {2}{G}: Put two +1/+1 counters on target land you control. If you're in a renaissance, you may have that land become a 0/0 green Elemental creature until end of turn. (It's still a land.)
Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.) Thuggish Detective can't be blocked by more than one creature. When Thuggish Detective becomes renowned, you may destroy target noncreature permanent.
When Verdant Curtain Mascot enters, choose one — • You gain 2 life. • Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)
Flying When Hallowed Perspective enters, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”) You may exert Hallowed Perspective as it attacks. When you do, until your next turn, you may cast spells as though they had flash. (An exerted creature won't untap during your next untap step.)