Yuan Shao, the Indecisive [Portal Three Kingdoms] Plains Set: Prophecy Type: Creature —

Set: Prophecy Type: Creature — Avatar Rarity: Rare Cost: {6}{B}{B} If there are ten or more creature cards total in all graveyards

Set: Alpha Edition Type: Creature — Dwarf Rarity: Uncommon Cost: {2}{R} {T}: Destroy target Wall

you may have Valakut

Your creatures aren't destroyed due to damage or deathtouch and aren't put into a graveyard due to having 0 or less toughness

Tazeem lullmage

Yuan Shao, the Indecisive [Portal Three Kingdoms] Plains Set: Prophecy Type: Creature —Set: Portal Three Kingdoms Type: Legendary Creature Human Soldier Rarity: Rare Cost: {4}{R} Horsemanship (This creature can't be blocked except by creatures with horsemanship.) Each creature you control can't be blocked by more than one creature.