msem-instigator

Draw two cards. Then discard a card unless you attacked this turn.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
At the beginning of combat on your turn, if you control three or more creatures, Traveling Scholar gets +1/+0 until end of turn.

This spell costs {1} less to cast for each card you've drawn this turn.
Create three 1/1 white Soldier creature tokens.

Trample
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Whenever Tribal Guard mentors a creature, that creature gains trample until end of turn.

Choose one —
• Return target creature card from your graveyard to your hand.
• Pay {4}. If you do, return target creature card from your graveyard to the battlefield.

As Unlikely Growth enters, choose grow or maintain.
Whenever a land you control enters,
• Grow — Put a +1/+1 counter on target creature you control.
• Maintain — Target creature you control gains trample and indestructible until end of turn.

Menace
Foresight — Whenever you draw your second card each turn, target player loses 2 life and you gain 2 life.

{T}: Add {C}.
{T}, Pay 1 life: Add {U}.
{4}{U}, {T}, Sacrifice Verdant Oasis: Draw two cards. Activate only as a sorcery.

Menace
When Vicious Stinger dies, each opponent loses 2 life. You gain life equal to the life lost this way.

Discard a card: Search your library for a card with the same mana value as the discarded card, reveal it, put it into your hand, then shuffle. Activate only as a sorcery and only once each turn.

If you would draw a card while your library has no cards in it, you win the game instead.

Defender
Whenever Wall of Sand deals combat damage to an opponent, you may pay 3 life. If you do, draw three cards.

Whenever Warrior of Far-Off Sands attacks, it gets +1/+1 until end of turn for each creature you control that's enchanted or equipped.

Target creature gets +1/+1 and gains first strike until end of turn. Untap it.

{1}, Sacrifice Wayfarer's Amulet: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
{3}, Sacrifice Wayfarer's Amulet: Search your library for a riddle card, reveal it, put it into your hand, then shuffle.

Flying
{T}, Exile two cards from your graveyard: Add one mana of any color.

{T}: Scry 1.
{1}{U}, {T}: Draw a card.

Whenever you cast a legendary spell, create a 1/1 white Human creature token.
{W}{U}{B}{R}{G}: Search your library for a legendary card, reveal it, put it into your hand, then shuffle. The next legendary spell you cast this turn costs {W}{U}{B}{R}{G} less to cast.

Choose three. You may choose the same mode more than once.
• Put a +1/+1 counter on up to one target creature you control, then you may have it fight target creature you don't control.
• Target player creates a 2/2 green Lizard creature token.
• You mill four cards and gain 4 life.

Vigilance
{X}{G}, {T}: Ylda, the Wild Soul becomes a copy of target creature you control with mana value X, except it has this ability and vigilance. Activate only as a sorcery.

Whenever you cast a cryptic spell, create a 1/1 white Human creature token with lifelink. (Artifacts, enchantments, and modal spells are cryptic.)