Build a safe tempo lane
0:00–about 14:00; especially level-up windows, crashed waves, and the first dragon or Grubs setup 60–90 seconds before spawn
In the opening, protect your carry's farm while creating a credible double-bomb threat. If the enemy walks up for a last hit and your first bomb can attach without exposing your ADC, use the second bomb only when it creates a stun or forces space. Crash before recalling or roaming. If your lane is losing the push, keep Time Warp for the enemy's engage and use bombs to discourage a dive rather than chasing poke. Your first transition is a crashed wave plus a visible move, not a walk into unrevealed river.

Annie
Bard
Brand
Fiddlesticks
Heimerdinger
Hwei