A keyword is a short rule in brackets on a card. These four change fights:
Assault[Assault]: +1 Might while the unit is an attacker (Assault 2[Assault 2] is +2).
Shield[Shield]: +1 Might while it's a defender (Shield 2[Shield 2] is +2). A Shield[Shield] unit that attacks gets nothing.
Tank[Tank]: when damage is dealt to its side, this unit must get its full lethal damage (as much as its Might) before any friend without Tank[Tank].
Deflect[Deflect]: a spell or ability an opponent aims at this unit costs them 1 more Power, of any Domain.
So count each unit's Might in its role: what it is on attack or on defence, not just its printed number. Hextech Ray, in these drills, has Action[Action]: Chapter 6 explains that word; for now it's a card you play to deal 3 damage.
Laurent Duelist: Assault 2[Assault 2]. A 5 on attack.
Leona, Determined: Shield[Shield]. A 5 on defence.
Sunlit Guardian: Shield[Shield] and Tank[Tank].
Pouty Poro: Deflect[Deflect].
Quick check
Your 3-Might unit with Shield 2[Shield 2] attacks. What's its Might in the fight?
Quick check
You attack with 4 damage. The defenders are a 2-Might unit and a 3-Might unit with Tank[Tank]. Where does your damage go?
You're on 7 and B is already scored. Leona, Determined holds A. She's a 4, but Shield[Shield] makes her 5 while she defends, so Royal Entourage (4) alone won't do it.
Need a hint?
Select Royal Entourage and Demacian Diplomat, drag both to A, and Confirm.
You're on 7 and B is already scored. Pouty Poro (2) holds A and has Deflect[Deflect]: your spells and abilities that pick it cost 1 Power more. Hextech Ray (1 Energy + 1 Fury) on it costs 1 Energy + 2 Power, which is both your runes (tap one for the Energy, then recycle it and the other for the Power). Don't spend them on anything else, then send the Diplomat to A.
Need a hint?
Play Hextech Ray on Pouty Poro (both runes), then move the Diplomat to A.
You're on 7 and B is already scored. Lee Sin holds A with Sunlit Guardian (Tank[Tank], and Shield[Shield] makes it a 4 on defence) and Apprentice Smith (2). Tank[Tank] means your damage must kill it before any unit without Tank[Tank]. Shadowblade Lurker (5) is Ready; your Legend, Unforgiven (pay 2 Energy and exhaust it: move a friendly unit to or from your base, even an exhausted one), can bring in the exhausted Cemetery Attendant (3). Choose who attacks first, then bring in the other and take A.
Need a hint?
Shadowblade Lurker attacks first. Then use Unforgiven to move Cemetery Attendant to A.
You're on 7 and B is already scored. Leona, Determined (4, Shield[Shield]) and Pouty Poro (2, Deflect[Deflect]) hold A. You have Laurent Duelist (3, Assault 2[Assault 2]), Trifarian Gloryseeker (2), Hextech Ray and two runes. Count what each unit really is in this fight, then pick the Ray's target.
Need a hint?
Ray Pouty Poro with both runes, then send the Duelist and the Gloryseeker to A together.