back mtg card from the Brink - Innistrad you may put one of those cards with mana value 4 or less onto the battlefield instead of putting it into your hand. Back for More | Ikoria:

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Royal Assassin was one of those cards for me

It gives a unique spin that wants to spread at least three poison counters to each of your opponents rather than focusing on just one

Terisiares Gold Medals When it comes to firsts, Ice Age has quite a few

More Card Draw: Staff of Nin, Mask of Memory (criminally underrated!), Endless Horizons, Land Tax, Weathered Wayfarer Graveyard Recursion: Sun Titan, Emeria, the Sky Ruin, Reveillark, Karmic Guide, Marshal's Anthem, Remember the Fallen, Haunted Fengraf, Buried Ruin, Death or Glory, Return to the Ranks, Angel of Glory's Rise, Trading Post Mobilizing The Troops Darien, King of Kjeldor is the primary token maker here