msem-instigator

Trample
Engage (This creature must be blocked each combat if able.)
When Lion's Vanguard enters the battlefield, creatures you control get +3/+3 and gain trample and haste until end of turn.

Whenever a land you control becomes a creature, put a +1/+1 counter on it.
{2}{G}{U}: Target land you control becomes a 3/3 Elemental creature in addition to its other types until end of turn.

Target creature gets +2/+2 until end of turn.
Fabled {3}{G}{G} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

At the beginning of each opponent's upkeep, choose one —
• At the beginning of the next end step, if you haven't been dealt combat damage this turn, Lord Dalehorn the Iron-Handed deals 3 damage to that player.
• At the beginning of the next end step, if that player hasn't cast a creature spell this turn, Lord Dalehorn the Iron-Handed deals 3 damage to that player.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever Lord Jared, the Griffin Knight attacks, put a +1/+1 counter on each other attacking creature you control.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Rapport — Whenever Lord's Handmaiden and at least one other creature you control become tapped, tap up to one target creature and remove it from combat.

Tap target creature. Prevent all damage that would be dealt to and dealt by that creature this turn.

Defender, trample
Whenever you lose life, Loyal Watchdog may attack as though it didn't have defender until the beginning of your next end step.

Harvest (You may tap any number of creatures you control as you cast this spell. If you do, reduce this spell's mana cost by their total power.)
{T}, Sacrifice a land: Search your library for a land card and put it onto the battlefield, then shuffle.

({T}: Add {G}.)
Lumbering Hillock enters the battlefield tapped.
Trample
{2}{G}{G}: Lumbering Hillock becomes a creature in addition to its other types until end of turn.

If a player would lose life, that player loses 3 life instead.
If a player would gain life, that player gains 3 life instead.

Destroy target creature that was dealt damage this turn, then create a 3/2 black Mutant Horror creature token.

Menace (This creature can't be blocked except by two or more creatures.)
Whenever Maddened Elk attacks, it gets +1/+1 until end of turn for each other attacking creature you control.

Whenever an opponent activates an ability of a permanent, if it isn't a mana ability, you gain 1 life and create a Gold token. (It's an artifact with “Sacrifice this artifact: Add one mana of any color.”)

Haste
Rapport — Whenever Maghbri Hunter and at least one other creature you control become tapped, Maghbri Hunter gets +2/+1 until end of turn.

Whenever a creature dies, scry 1 and each opponent loses 1 life.

When Maghbri Whisper enters the battlefield, nourish 1. (To nourish 1, either put a +1/+1 counter on this creature or create a 1/1 white Citizen creature token.)
Sacrifice a creature: Maghbri Whisper gets +2/+2 until end of turn.

{1}: Look at the top card of your library.
{T}, Sacrifice Marked Coin: You may shuffle your library. Draw a card.

Target player sacrifices an attacking or blocking creature. Prevent all damage that would be dealt by creatures this turn.

Whenever another creature enters the battlefield, Masquerading Bohemian becomes a copy of that creature except it's a Noble in addition to its other types and it has this ability.

Destroy all creatures. For each creature destroyed this way, its controller draws a card.

Flash
When Master of Disorientation enters the battlefield, you may choose new targets for target instant or sorcery spell. Then proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Shuffle the cards from your hand into your library, then draw that many cards.
Draw a card.

Mechanized Ideal gets +X/+Y, where X is the highest base power among other creatures you control and Y is the highest base toughness among other creatures you control.