At the beginning of your upkeep, you may put a page counter on Barrin's Codex., , Sacrifice Barrin's Codex: Draw X cards, where X is the number of page counters on Barrin's Codex.
At the beginning of your upkeep, you may put a verse counter on Serra's Liturgy., Sacrifice Serra's Liturgy: Destroy up to X target artifacts and/or enchantments, where X is the number of verse counters on Serra's Liturgy.
At the beginning of your upkeep, you may put a verse counter on Rumbling Crescendo., Sacrifice Rumbling Crescendo: Destroy up to X target lands, where X is the number of verse counters on Rumbling Crescendo.
Whenever an opponent plays a land, if Hidden Stag is an enchantment, Hidden Stag becomes a 3/2 Elk Beast creature.Whenever you play a land, if Hidden Stag is a creature, Hidden Stag becomes an enchantment.
At the beginning of your upkeep, Purging Scythe deals 2 damage to the creature with the least toughness. If two or more creatures are tied for least toughness, you choose one of them.
When an opponent casts a creature spell, if Opal Titan is an enchantment, Opal Titan becomes a 4/4 Giant creature with protection from each of that spell's colors.