Spring of Rejuvenation -
Enchantment | R
This spell costs less to cast for each basic land type you control.
At the beginning of your end step, untap all lands you control.
: You gain 5 life.

Channeler of Currents -
Creature - Merfolk Wizard | U
Haste
When Channeler of Currents enters the battlefield, untap creatures you control.
Terraform (: Target land you control becomes a 3/3 colorless Elemental creature until end of turn. It's still a land.)
1/1

Hidden Within -
Sorcery | MR
You gain 5 life. If was spent to cast this spell, each opponent loses 5 life instead.
Create a 3/3 green Beast creature token. If was spent to cast this spell, each opponent sacrifices a creature instead.
Hidden Within deals 2 damage to each creature. If was spent to cast this spell, search your library for a card, put that card into your hand, then shuffle your library.
Draw two cards. If was spent to cast this spell, you may cast a card from your hand without paying its mana cost.

Daily Tithes -
Enchantment | U
At the beginning of your upkeep and end step, you may pay . If was paid this way, you gain 1 life. If was paid this way, each opponent loses 1 life.
In the morning, we sing hymns of praise. At night, we cry tears of mourning.