Vengeant Earth

Target creature or land you control becomes a 4/4 Elemental creature with haste in addition to its other types until end of turn. It must be blocked this turn if able.

King Harald's Revenge

Until end of turn, target creature gets +1/+1 for each creature you control and gains trample. It must be blocked this turn if able.

Predatory Impetus

Enchant creature
Enchanted creature gets +3/+3, must be blocked if able, and is goaded. (It attacks each combat if able and attacks a player other than you if able.)

Taunting Elf

All creatures able to block Taunting Elf do so.

Provoke

Untap target creature you don't control. That creature blocks this turn if able.
Draw a card.

Gaea's Protector

Gaea's Protector must be blocked if able.

Shinen of Life's Roar

All creatures able to block Shinen of Life's Roar do so.
Channel — {2}{G}{G}, Discard Shinen of Life's Roar: All creatures able to block target creature this turn do so.

You've Been Caught Stealing

Choose one —
• Threaten the Merchant — Each creature blocks this turn if able.
• Bribe the Guards — You create a Treasure token for each opponent who was dealt damage this turn. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Goblin Anarchomancer

Each spell you cast that's red or green costs {1} less to cast.

Compelled Duel

Target creature gets +3/+3 until end of turn and must be blocked this turn if able.

Prized Unicorn

All creatures able to block Prized Unicorn do so.

Goblin Fire Fiend

Haste
Goblin Fire Fiend must be blocked if able.
{R}: Goblin Fire Fiend gets +1/+0 until end of turn.

Elemental Uprising

Target land you control becomes a 4/4 Elemental creature with haste until end of turn. It's still a land. It must be blocked this turn if able.

Rampant Growth

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Disturbed Slumber

Until end of turn, target land you control becomes a 4/4 Dinosaur creature with reach and haste. It's still a land. It must be blocked this turn if able.

Inescapable Brute

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Inescapable Brute must be blocked if able.

Cultivate

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Llanowar Elves

General Marhault Elsdragon

Whenever a creature you control becomes blocked, it gets +3/+3 until end of turn for each creature blocking it.