Here is one of the fastest ways, and you just need a way to gain a life, or make your opponent lose a life to set it in motion
Luckily, Wizards of the Coast made actual playable cards that seamlessly fit into already established Standard strategies and archetypes
Creature Kor Shaman First strike Magecraft Whenever you cast or copy an instant or sorcery spell, Lorehold Pledgemage gets +1/+0 until end of turn
You may choose creatures with hexproof, for example, and choosing a creature with ward will not cause the ward ability to trigger
Enter FlotsamFlotsam, your early-game instant that will have you mill three and get you a Clue for your troubles
You can build up mana, gain life, or grow it with counters