msem-instigator

As an additional cost to cast this spell, put two -1/-1 counters on a creature you control.
Draw two cards.

Search your library for up to three basic land cards, reveal those cards, shuffle, then put one of them into the battlefield tapped, one into your hand and one on top of your library.

Roggar's Frenzy deals 3 damage to any target.
{2}{R}, Exile Roggar's Frenzy from your graveyard: Create two tapped 1/1 red Elemental creature tokens.

Roggar's Gambit deals 2 damage to any target.
Reprise {1}{R} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)
Damage dealt by sources reprising Roggar's Gambit can't be prevented.

Creatures you control get +1/+1 until end of turn. If you control a Rebel, draw a card.

({T}: Add {R} or {W}.)
Rugged Fields enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

{4}, Sacrifice Ruin Salvager: Return target card from your graveyard to your hand.

Enchant creature
Enchanted creature gets +2/+2 and has flying.
When enchanted creature dies, draw a card.

Lifelink
When Runic Soulthief enters the battlefield, target player loses X life and you gain X life, where X is the number of enchantments you control.

Target creature gets +3/+0 and gains first strike until end of turn.

Target creature gains trample until end of turn. The next time a source of your choice would deal damage to that creature, prevent that damage. If damage is prevented this way, that creature gets +X/+0 until end of turn, where X is the amount of damage prevented this way.

Spells you cast during combat cost {1} less to cast.
Spells your opponents cast during combat cost {1} more to cast.

Whenever a land creature you control deals combat damage to a player, put a +1/+1 counter on it.
{1}{G}: Put a +1/+1 counter on target land you control. It becomes a 0/0 Elemental creature that's still a land.

Whenever Sanctuary is dealt damage, you gain that much life.
All damage that would be dealt to another creature you control is dealt to Sanctuary instead.

Target creature gets +1/+0 and gains vigilance and lifelink until end of turn.

Create X 1/1 green Saproling creature tokens, then populate. (Create a token that's a copy of a creature token you control.)

Prowess
Whenever you cast a noncreature spell, you may choose target permanent with one or more time counters on it, then put a time counter on it or remove a time counter from it.

Creature spells you cast cost {2} less to cast.
Whenever a creature enters the battlefield under your control, if it doesn't have vanishing, put four time counters on it and it gains vanishing. (At the beginning of your upkeep, remove a time counter from that permanent. When the last is removed, sacrifice it.)

Each instant and sorcery card in your graveyard has reprise. The reprise cost is equal to its mana cost. (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)
Reprising spells you control can't be countered.

Remove a -1/-1 counter from target creature. That creature gets +2/+2 until end of turn.

Attacking creatures get -3/-0 until end of turn.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Scorchland Vandal attacks each combat if able.

Engorge (As this enters the battlefield, mill three cards, then exile a card from among the milled cards.)
When Scourge of the Deadlands enters the battlefield, if it engorged a creature card, each other player sacrifices a creature.

When Scrapgear Contraption dies, you may put a +1/+1 counter on target creature.

When Scrapyard Aberration enters the battlefield, you may sacrifice another artifact. If you do, target creature gets -2/-2 until end of turn.