Aggro Healing Paladin Witchwood

Since your hero must have taken damage for healing synergy to work you want to mulligan 1 and 2 drops away as they'll draw damage away from your face (and they're more effective when pulled from Call To Arms), unless you have a weapon to damage yourself.

Against most aggro decks you'll end up taking damage easily, so keeping small minions isn't a concern. Knife Juggler and weapons can help deal with early boards and protect your key minions. Against Baku Hunter keep all low cost minions, they generally can't deal with them, and their hero power will damage you. Against Genn and Baku Paladin keep Sea Giant, it's very possible that sea giant gets discounted close to 0 in these match-ups.

The main concern when dealing with control is protecting your board from AoE and getting early damage in. Against Shudderwock Shaman Rebuke can be vital giving you extra protection from Lightning Storm, Hex and Volcano. Against Control Warlock you want to go as fast as possible to deal damage before Voidlords come down, Equality can be very important in this matchup.