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

Each player who controls an artifact or enchantment creates a 2/2 white Mouse creature token. Then destroy all artifacts and enchantments.

Favored
Whenever your Champion attacks, it gets +2/+0 until end of turn.

When Parental Pair enters, create a token that's a copy of it, except it's 2/2 and doesn't have this ability.
Amity — Whenever you attack with Parental Pair and exactly one other creature, you may have Parental Pair fight target creature.

Trample
Solidarity

Target player reveals their hand. You choose a nonland card from it or a card from their graveyard. Exile that card. You lose 1 life.

Flying
Whenever Arsenal Mentor attacks, teach target attacking creature with lesser power flying.

When Wayward Drek enters, create a 1/1 colorless Cyborg artifact creature token.
Cybersoul {3}{W/B}

Flash
Whenever you cast a spell during an opponent's turn, scry 1 and put a +1/+1 counter on Cutthroat Kallukah.

Each creature you control gets +2/+1 as long as you control two or more other creatures with the same name as it.
{3}{C}, {T}: Create a token that's a copy of target creature you control.

When Terror of Olantin enters, create a number of 1/1 blue Tentacle creature tokens equal to your devotion to green.

Menace
Whenever Gelthis deals combat damage to a player, that player reveals their hand. You choose a nonland card from it. Exile that card until Gelthis leaves the battlefield.
Spellcharge 3

When this creature enters, create a 2/2 white Samurai creature token with exalted.
Cycling {2}

When Merciless Headsman enters, create a 2/2 colorless Minion creature token with decayed.
{1}{B}, Sacrifice another creature: Draw a card.

Destroy target creature. If that creature entered this turn, scry 2.

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

When Cosmic Colossus enters, if you cast it from your hand, cast a copy of target card in exile without paying its mana cost unless an opponent exiles two nonland permanents they control.

Ninjutsu {1}{U}
Whenever this creature deals combat damage to a player, you may have it become a copy of another target creature, except it's a Ninja in addition to its other types.

Flash
If a player would search a library for one or more cards, they reveal those cards, and can't find nonbasic cards.

Whenever this Subroutine runs, create a token that's a copy of target creature you control.

Amity — When you cast this spell, copy it if you attacked with exactly two creatures this turn. You may choose new targets for the copy.
Target creature gets +0/+2 and gains hexproof until end of turn.

Flash
When Grasping Ancient enters, exile up to one target instant or sorcery spell.
Whenever Grasping Ancient attacks, you may cast the exiled card without paying its mana cost.
Spellcharge 4

If you would create one or more tokens, you may instead create that many tokens that are copies of a token you control. Do this only once each turn.
Whenever you attack, you may create a 1/1 blue Bird creature token with flying.

Vigilance
When this creature enters, create three 1/1 white Monk creature tokens with vigilance.

Trample
Creatures you control with trample have “{1}{R}{G}: This creature must be blocked each combat this turn if able.”