Dianne, the Donator

All spells have Assist. (Another player can pay up
to {x} of a spell's cost.)
When a player assists, you and that player each
choose up to one based on the amount assisted:
• 3 or more: Target player searches their library
for a land card and puts it on the battlefield.
• 5 or more: Target player draws three cards.
• 7 or more: Target player may put a permanent
card from their hand onto the battlefield.