Creature â Cat Soldier
At the beginning of combat on your turn, if you control three or more creatures, Leonin Vanguard gets +1/+1 until end of turn and you gain 1 life.1/1
If you donâ€™t control three or more creatures as your combat phase begins, Leonin Vanguardâ€™s ability wonâ€™t trigger at all. Causing a permanent to become a creature during the beginning of combat step wonâ€™t cause Leonin Vanguardâ€™s ability to trigger.
If you donâ€™t control three or more creatures as Leonin Vanguardâ€™s ability resolves, the ability does nothing. However, if you do control three or more creatures as it resolves, the +1/+1 bonus doesnâ€™t stop applying if you no longer control three creatures later in the turn.