Faith's Guide

If you paid {r} to cast Faith's Guide, it has first strike.
If you paid {w} to cast Faith's Guide, it has lifelink.
{w}{r}, Discard a card: Put a +1/+1 counter on Faith's Guide.
{w}{r}, Discard 3 cards and remove 3 +1/+1 counters from Faith's Guide: Faith's Guide becomes a 6/6 Legendary Human Warrior with indestructible, first strike, and lifelink.