When a card effect is activated: Destroy all cards Summoned by this effect.[/spoiler][spoiler=Pretric, the Lightning Dragon]Pretric is a nice choice to Summon two copies of then kill with Plat
This effect does not create a chain block and is processed after the opponent's effect is activated.[11] At the time of release, it was an 8-axis monster that was often used along with Holy Awakening Divine Dragon - Aenead and Divine Dragon Knight Felgrand as it was highly evaluated among the rank 8 Xyz monsters for its effectiveness in battle despite having effects other than destruction
But when you start to look at sequences involving Teferi, Hero of Dominaria alongside Wilderness Reclamation, you start to see lines that generate exactly seven mana
Expospeak: As in the original series, for the benefit of viewers, duelists have to describe the effects every time they play a card, even one they've already played
At the start of your combat step, all your Merfolk creatures explore, revealing the top card of your library and putting it into your hand if its a land, or giving that Merfolk a +1/+1 counter and then letting you choose to keep it on top of your deck or into your graveyard