Improvisation Capstone: Secrets of Strixhaven Penny Razorkin Needlehead has first strike

Razorkin Needlehead has first strike during your turn

Sacrifice a Desert: Ramunap Ruins deals 2 damage to each opponent

Activated abilities of sources with the chosen name can't be activated unless they're mana abilities

{100}: Add one mana of any color

Then you create a Treasure token if that player controls more lands than each other player

Improvisation Capstone: Secrets of Strixhaven Penny Razorkin Needlehead has first strikeExile cards from the top of your library until you exile cards with total mana value 4 or greater. You may cast any number of spells from among them without paying their mana costs. Paradigm (Then exile this spell. After you first resolve a spell with this name, you may cast a copy of it from exile without paying its mana cost at the beginning of each of your first main phases.)