Mangara, the Diplomat (Extended Art) [Core Set 2021] Goblin Rogue Whenever Cockatrice blocks or becomes

Whenever Cockatrice blocks or becomes blocked by a non-Wall creature

" —Jaya Ballard

then you may cast any number of spells from among those cards without paying their mana costs

If an opponent would search a library

" —Gerrard of the *Weatherlight*

Mangara, the Diplomat (Extended Art) [Core Set 2021] Goblin Rogue Whenever Cockatrice blocks or becomesSet: Core Set 2021 Type: Legendary Creature Human Cleric Rarity: Mythic Cost: {3}{W} Lifelink Whenever an opponent attacks with creatures, if two or more of those creatures are attacking you and or planeswalkers you control, draw a card. Whenever an opponent casts their second spell each turn, draw a card.