Urza's Legacy

At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice Defense of the Heart, search your library for up to two...

Creatures you control have first strike.

At the beginning of each player's upkeep, if that player controls more lands than each other player, Rivalry deals 2 damage to them.

Enchant creature Enchanted creature gets +1/+0 for each Mountain you control.

{3}, Discard a card at random: Pyromancy deals damage to any target equal to the converted mana cost of the discarded card.

At the beginning of each player's upkeep, if that player controls more lands than each other player, Rivalry deals 2 damage to them.

Enchant creature All damage that would be dealt to enchanted creature is dealt to its controller instead.

When a creature is put into an opponent's graveyard from the battlefield, if Lurking Skirge is an enchantment, Lurking Skirge becomes a 3/2 Imp cre...

At the beginning of your upkeep, if you have no cards in hand, sacrifice Brink of Madness and target opponent discards their hand.

When you have 10 or less life, if Opal Avenger is an enchantment, Opal Avenger becomes a 3/5 Soldier creature.