10 Nov 2023
Ian Malcolm, Chaotician's first ability can trigger only once each turn for each player. It doesn't matter if Ian was on the battlefield when the first card was drawn. If you control it when a player draws their second card in a turn, that ability will trigger.
10 Nov 2023
Players must follow all applicable timing rules for casting spells with the permission granted by Ian Malcolm, Chaotician's last ability. For example, if the spell is a sorcery, it can only be cast during that player's main phase while the stack is empty.
10 Nov 2023
The six types of mana are white, blue, black, red, green, and colorless. Snow mana is not a type of mana. Ian Malcolm, Chaotician won't let you pay a snow cost using mana produced by a nonsnow source.