High Noon offers another strong tool to prevent a flurry of spells in a single turn, and Magebane Lizard can also punish the game plan of chaining Opt and Sleight of Hand
Red decks these days have many tools to enable delirium, too
Haliya, Guided by Light A legendary Soul Sister with a card draw ability is a fine payoff for a lifegain deck, so Haliya, Guided by Light is far from unplayable, even if it might be uninspiring
They have no subtypes, but may have a number of static, triggered, or activated abilities
On top of that, it has trample, which is something these kinds of creatures need because theyre regularly stopped by chump blockers
The lack of any clear labels to take you to your decks immediately is kind of a pain, but as soon as you get the hang of it, deckstats is an easy site to navigate