Rule 902.7 · Vanguard
Any abilities of a face-up vanguard card in the command zone function from that zone. The card’s static abilities affect the game, its triggered abilities may trigger, and its activated abilities may be activated.
Any abilities of a face-up vanguard card in the command zone function from that zone. The card’s static abilities affect the game, its triggered abilities may trigger, and its activated abilities may be activated.
Ask the judge Pro
The life counter has an AI judge that answers your play citing the exact rules. It is part of Gatewatch Pro; the rules, Oracle text and rulings stay free.