Some cards excel in boasting mighty strength in challenges or can hoover up lore to accelerate you to winning, while others provide essential support for the rest of your deck
Giada is many things an aggressively costed evasive creature prime for wearing equipment
With cards like Hellrider kicking out other recent four-drops like Moltensteel Dragon (which is actually a four-drop) and red getting more curve-toppers like Thundermaw Hellkite and Zealous Conscripts, RPTS is another card that was better years ago as it was a curve-topper that could be supplemented by another three or four mana spell at the top of the curve when you alpha striked
Tainted Remedy won't go infinite with Exquisite Blood either because there's nothing that would cause an opponent to gain life again, so it's a nonbo
It's cheap and effective removal and if you see it while drafting, pick it up
Effects which take mana into your mana pool are usually interrupts, so you can get mana for your spells quickly enough to respond to your rival's actions