This means, with enough methods to get those double-triggers in your deck, your creatures will grow into terrifying threats very quickly
Most instances of either gating condition are on activated abilities (most of which don't cost mana and therefore need a limiting condition), neatly solving the issue I'm about to mention, but consider this example: We're playing Innistrad Crimson Vow draft
Two ETB-tapped lands Scorched Geyser and Coastal Peak are strictly worse than basic lands or any dual land that enters untapped
Loxi: Rodolf is cool, but he's a bit expensive and combines two archetypes that might be a bit hard to slap together
Alongside the sweet snowy designs on the covers, if you're curious what comes with each of these items, here's the breakdown: the booster pack sets you up with 12 cards, including six Common cards, three Uncommon cards, two cards of either Rare, Super Rare, or Legendary rarity, and one random foil card