Journey 3 (This permanent enters the battlefield with three time counters on it. At the beginning of your upkeep, remove one. When you remove the last, transform this card.)

Whenever a time counter is removed from Ambush Mission, but a +1/+1 counter on target creature you control.

Reach

When this permanent transforms into Strike Team, it deals X damage to target creature or planeswalker an opponent controls, where X is the number of +1/+1 counters among creatures you control.