You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.
When you cast this spell, counter it unless you sacrifice a land. At the beginning of each player's upkeep, that player sacrifices a land of their choice. When there are no lands on the battlefield, sacrifice Mana Vortex.
Trample As Nameless Race enters, pay any amount of life. The amount you pay can't be more than the total number of white nontoken permanents your opponents control plus the total number of white cards in their graveyards. Nameless Race's power and toughness are each equal to the life paid as it entered.
"As the cavalry bore down, we faced them with swords drawn and pikes hidden in the grass at our feet. 'Don't lift your pikes 'til I give the word,' I said." —Maeveen O'Donagh, Memoirs of a Soldier
You may choose not to untap Preacher during your untap step. {T}: For as long as Preacher remains tapped, gain control of target creature of an opponent's choice they control.
As Psychic Allergy enters, choose a color. At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that player, where X is the number of nontoken permanents of the chosen color they control. At the beginning of your upkeep, destroy Psychic Allergy unless you sacrifice two Islands.
{X}, {T}: Change the target of target spell with a single target if that target is you. The new target must be a player. X is twice the mana value of that spell.