Understanding 'trading stances' means knowing when your champion is strong relative to your opponent. This involves tracking cooldowns, mana, and item advantages. If an enemy just used a key ability, you might have a window to trade aggressively. 'Power spikes' are moments when your champion gains a significant increase in strength, often at level 2, 3, 6, or upon completing a core item. Recognize these moments for both yourself and your opponents. Capitalize on your power spikes to gain advantages, and respect enemy power spikes to avoid unfavorable engagements. This dynamic understanding of strength is vital for lane dominance.

Trading Stances and Power Spikes — League of Legends Guide