mtg cave commander deck Krenko, Mob Boss ELITE Goblin Tribal Tokens Custom – CommanderComplete and creatures that dominate the environment Custom Commander Deck*** Marath, Will

Can I just cover it with my hand so they can't see it

You could also use them together for just one more mana then the flashback to kill a bigger body, such as Arrogant Wurm

We're also replacing Heihei, Protective Rooster with Chien-Po - Imperial Soldier, trading one lore for two Willpower

If you dont have a local game store (LGS) located closer to you, one of the other best ways you can purchase MTG bulk cards while supporting the trading card community is via affiliate links

Eumidian TerrabotanistEumidian Terrabotanist is another way to increase your life gain pip, while Duskshell CrawlerDuskshell Crawler gives any of your team trample so long as they have a +1/+1 counter on them (and you know they will)

In Golgari or Jund shells this is quite tasty