Anran's Realm enters the battlefield tapped. {T}: Add {R} or {G}. {R}{G}, {T}: Create a Function token with “This spell can't be countered.” Activate only if you control a creature with power 4 or greater. (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)
Target creature gets +2/+2 until end of turn. If it's an enchanted creature or enchantment creature, it also gains hexproof and indestructible until end of turn. (It can't be the target of spells or abilities your opponents control. Damage and effects that say “destroy” don't destroy it.)
As Aquatic Refuge enters the battlefield, you may tap an untapped creature you control. If you don't, Aquatic Refuge enters the battlefield tapped. {T}: Add {W} or {U}.
Aristocrat's Gallery enters tapped. When Aristocrat's Gallery enters the battlefield, look at the top card of your library. You may put it into your graveyard. {T}: Add {G} or {U}.
Target creature you control gets +2/+2 until end of turn. If it's attacking, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
Trample Arpechian Champion can only attack or block alone. Whenever a land enters the battlefield under your control, put a +1/+1 counter on Arpechian Champion.
Enchant land When Arrive, Surrounded by Petals enters the battlefield, audition for green. (Create a 1/1 Construct Actor creature token, a Scout Role giving 2/3 and vigilance, or a Warrior Role giving 3/2 and trample. Roles replace older ones.) Enchanted land has “{T}: Add one mana of any color.”
Target creature gets +1/+1 until end of turn. Untap that creature. Fabled {2}{W}(Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)
Winnow (Damage dealt to this creature also causes you to lose that much life.) {2}{B}: Each creature blocking Arroyo's Servant gains winnow until end of turn.