Flying, haste
Whenever you attack, you may pay {R} and sacrifice two artifacts and/or enchantments. If you do, return this card from your graveyard to the battlefield tapped and attacking.

This spell costs {X} less to cast, where X is the number of Mountains you control plus the number of cards with a cycling ability in your graveyard.
Search your library for a Dragon or Phoenix card, put it onto the battlefield, then shuffle.
Mountaincycling {2}

Whenever a creature card or creature token is put into your graveyard from anywhere, put a +1/+1 counter on Bottom Feeder.

Destroy target artifact creature or creature with flying.

Bouncers-for-Hire can't attack unless you control a red permanent.

Whenever you cast an instant spell, put a +1/+1 counter on Brass Oracle.
Whenever you cast a sorcery spell, Brass Oracle deals damage to target opponent equal to its power.

Trample
Breaking Ground must be blocked if able.
{T}: Add {C}.
Spellcharge 9

Creatures you control get +X/+X and gain vigilance and trample until end of turn, where X is the number of Forests you control plus the number of cards with a cycling ability in your graveyard.
Forestcycling {2}

Trample
Landfall — Whenever a land you control enters, target creature blocks Brick Breaker this turn if able.

Bring Down the Sky deals X damage to each creature and each planeswalker. Put up to X exiled cards with flashback you own into your graveyard.

Ninjutsu {2}{G}
When this creature enters, another target creature you control gains indestructible until end of turn. Untap it.

Once each turn, when you activate a nonmana ability, you may have Bubbling Firesnail deal 1 damage to each opponent.
{1}{R}: Bubbling Firesnail gets +2/-2 until end of turn.

Level up {4}{G}{G}
[level 1-2] Trample
[level 3+] Trample

This land enters tapped.
Level up {G}{G}{G}
[level 1-2] Ward {2}
This land is also a creature.
[level 3+] Ward {2}
This land is also a creature.

You can't cast noncreature spells.
Creature spells you cast cost {X} less to cast, where X is the greatest power among creatures you control.

Reach
Bumbling Bigfoot doesn't untap during your untap step.
Wander {1}{G}{G}

Amity — Whenever you attack with Bumbling Pollinator and exactly one other creature, create a 1/1 green Plant creature token.

Level up {3}
[level 2-5] Vigilance
[level 6+] Vigilance, indestructible

Surface {3}{G}{G}
Buried Geode surfaces with a +1/+1 counter.

All spells cost {1} more to cast.
Spellcharge 6

Choose one —
• Destroy target noncreature artifact with mana value X.
• Burn Up deals X damage to target creature or planeswalker.

Amity — Whenever you attack with Burning Celestial and exactly one other creature, Burning Celestial acclimates.
As long as you control a red Weather, Burning Celestial has trample.

Whenever this Subroutine runs, discard up to three cards, then draw that many cards.

Whenever this Subroutine runs, creatures you control get +2/+0 until end of turn. Target creature you control gains first strike until end of turn.

Approval — When Cabinet Recruiter enters, you may search your library for a creature card with mana value less than or equal to the number of colors among permanents you control, reveal it, put it into your hand, then shuffle.